{"id":36840,"date":"2026-09-16T16:34:57","date_gmt":"2026-09-16T09:34:57","guid":{"rendered":"https:\/\/kawasan.vn\/?p=36840"},"modified":"2026-09-16T16:34:57","modified_gmt":"2026-09-16T09:34:57","slug":"coi-bao-dong-khong-day-al21-canh-bao-an-ninh","status":"publish","type":"post","link":"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/","title":{"rendered":"C\u00f2i B\u00e1o \u0110\u1ed9ng Kh\u00f4ng D\u00e2y AL21: C\u1ea3nh B\u00e1o An Ninh \u00c2m L\u01b0\u1ee3ng L\u1edbn"},"content":{"rendered":"<p data-path-to-node=\"9\">L\u1eafp <a href=\"https:\/\/kawasan.vn\/en\/product\/coi-bao-dong-al21\/\"><b data-path-to-node=\"9\" data-index-in-node=\"4\">c\u00f2i b\u00e1o \u0111\u1ed9ng<\/b> kh\u00f4ng d\u00e2y AL21 Kawasan<\/a> l\u00e0 gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 an to\u00e0n t\u1ed1i \u01b0u cho m\u1ecdi c\u00f4ng tr\u00ecnh. D\u00f2ng <b data-path-to-node=\"9\" data-index-in-node=\"100\">c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung t\u00e2m b\u00e1o \u0111\u1ed9ng mini ti\u1ec7n l\u1ee3i. Trang b\u1ecb h\u1ec7 th\u1ed1ng <b data-path-to-node=\"9\" data-index-in-node=\"197\">b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> AL21 gi\u00fap xua \u0111u\u1ed5i k\u1ebb gian ngay l\u1eadp t\u1ee9c. M\u1eabu <b data-path-to-node=\"9\" data-index-in-node=\"261\">c\u00f2i b\u00e1o \u0111\u1ed9ng<\/b> cao c\u1ea5p n\u00e0y mang l\u1ea1i s\u1ef1 an t\u00e2m tuy\u1ec7t \u0111\u1ed1i cho gia \u0111\u00ecnh b\u1ea1n.<\/p>\n<p data-path-to-node=\"10\">Thi\u1ebft b\u1ecb s\u1edf h\u1eefu \u00e2m l\u01b0\u1ee3ng b\u00e1o \u0111\u1ed9ng l\u1edbn t\u1edbi 110dB c\u00f9ng kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i s\u00f3ng RF 433MHz c\u1ef1c nh\u1ea1y. S\u1ea3n ph\u1ea9m c\u00f3 pin s\u1ea1c d\u1ef1 ph\u00f2ng duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c khi m\u1ea5t \u0111i\u1ec7n. \u0110\u00e2y l\u00e0 gi\u1ea3i ph\u00e1p\u00a0nh\u1ecf g\u1ecdn, th\u00f4ng minh v\u00e0 d\u1ec5 d\u00e0ng l\u1eafp \u0111\u1eb7t.<\/p>\n<figure id=\"attachment_36856\" aria-describedby=\"caption-attachment-36856\" style=\"width: 692px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-36856\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2.png\" alt=\"C\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21 Kawasan c\u1ea3nh b\u00e1o \u00e2m l\u01b0\u1ee3ng l\u1edbn\" width=\"692\" height=\"692\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2-640x640.png 640w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2-400x400.png 400w\" sizes=\"auto, (max-width: 692px) 100vw, 692px\" \/><figcaption id=\"caption-attachment-36856\" class=\"wp-caption-text\">C\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21 Kawasan c\u1ea3nh b\u00e1o \u00e2m l\u01b0\u1ee3ng l\u1edbn<\/figcaption><\/figure>\n<h2 data-path-to-node=\"13\"><span class=\"ez-toc-section\" id=\"1_Thach_thuc_an_ninh_va_giai_phap_canh_bao_tai_cho\"><\/span><span style=\"font-size: 21px;\">1. Th\u00e1ch th\u1ee9c an ninh v\u00e0 gi\u1ea3i ph\u00e1p c\u1ea3nh b\u00e1o t\u1ea1i ch\u1ed7<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" >N\u1ed9i Dung B&agrave;i Vi\u1ebft<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#1_Thach_thuc_an_ninh_va_giai_phap_canh_bao_tai_cho\" title=\"1. Th\u00e1ch th\u1ee9c an ninh v\u00e0 gi\u1ea3i ph\u00e1p c\u1ea3nh b\u00e1o t\u1ea1i ch\u1ed7\">1. Th\u00e1ch th\u1ee9c an ninh v\u00e0 gi\u1ea3i ph\u00e1p c\u1ea3nh b\u00e1o t\u1ea1i ch\u1ed7<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#2_Thong_so_ky_thuat_noi_bat_cua_coi_bao_dong_AL21_Kawasan\" title=\"2. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u1ed5i b\u1eadt c\u1ee7a c\u00f2i b\u00e1o \u0111\u1ed9ng AL21 Kawasan\">2. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u1ed5i b\u1eadt c\u1ee7a c\u00f2i b\u00e1o \u0111\u1ed9ng AL21 Kawasan<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#3_Uu_diem_noi_bat_cua_he_thong_coi_bao_dong_khong_day_AL21\" title=\"3. \u01afu \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21\">3. \u01afu \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#4_3_Tinh_huong_ung_dung_thuc_te\" title=\"4. 3 T\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf\">4. 3 T\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#41_Canh_bao_dot_nhap_cho_nha_o_chung_cu_va_can_ho_mini\" title=\"4.1. C\u1ea3nh b\u00e1o \u0111\u1ed9t nh\u1eadp cho nh\u00e0 \u1edf, chung c\u01b0 v\u00e0 c\u0103n h\u1ed9 mini\">4.1. C\u1ea3nh b\u00e1o \u0111\u1ed9t nh\u1eadp cho nh\u00e0 \u1edf, chung c\u01b0 v\u00e0 c\u0103n h\u1ed9 mini<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#42_Bao_ve_an_ninh_cua_hang_tiem_vang\" title=\"4.2. B\u1ea3o v\u1ec7 an ninh c\u1eeda h\u00e0ng, ti\u1ec7m v\u00e0ng\">4.2. B\u1ea3o v\u1ec7 an ninh c\u1eeda h\u00e0ng, ti\u1ec7m v\u00e0ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#43_Giam_sat_an_toan_cho_van_phong_nho_va_kho_chua_hang\" title=\"4.3. Gi\u00e1m s\u00e1t an to\u00e0n cho v\u0103n ph\u00f2ng nh\u1ecf v\u00e0 kho ch\u1ee9a h\u00e0ng\">4.3. Gi\u00e1m s\u00e1t an to\u00e0n cho v\u0103n ph\u00f2ng nh\u1ecf v\u00e0 kho ch\u1ee9a h\u00e0ng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#5_Huong_dan_cai_dat_va_su_dung_coi_AL21_chuan_ky_thuat\" title=\"5. H\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t v\u00e0 s\u1eed d\u1ee5ng c\u00f2i AL21 chu\u1ea9n k\u1ef9 thu\u1eadt\">5. H\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t v\u00e0 s\u1eed d\u1ee5ng c\u00f2i AL21 chu\u1ea9n k\u1ef9 thu\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#6_MOT_SO_SU_CO_VA_CACH_KHAC_PHUC\" title=\"6. M\u1ed8T S\u1ed0 S\u1ef0 C\u1ed0 V\u00c0 C\u00c1CH KH\u1eaeC PH\u1ee4C\">6. M\u1ed8T S\u1ed0 S\u1ef0 C\u1ed0 V\u00c0 C\u00c1CH KH\u1eaeC PH\u1ee4C<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#TAI_SAO_NEN_CHON_KAWASAN\" title=\"WHY CHOOSE KAWASAN?\">WHY CHOOSE KAWASAN?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#Cam_ket_tu_Kawasan\" title=\"Kawasan Commitment\">Kawasan Commitment<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#Mua_chinh_hang_tai\" title=\"Buy genuine products at:\">Buy genuine products at:<\/a><\/li><\/ul><\/nav><\/div>\n\n<p data-path-to-node=\"14\">Tr\u1ed9m c\u1eafp v\u00e0 \u0111\u1ed9t nh\u1eadp tr\u00e1i ph\u00e9p lu\u00f4n l\u00e0 m\u1ed1i lo l\u1edbn c\u1ee7a c\u00e1c gia \u0111\u00ecnh v\u00e0 c\u1eeda h\u00e0ng. Nhi\u1ec1u h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 \u0111i d\u00e2y ph\u1ee9c t\u1ea1p g\u00e2y m\u1ea5t th\u1ea9m m\u1ef9 v\u00e0 kh\u00f3 thi c\u00f4ng. N\u1ebfu kh\u00f4ng c\u00f3 <b data-path-to-node=\"14\" data-index-in-node=\"164\">c\u00f2i b\u00e1o \u0111\u1ed9ng<\/b> ph\u00e1t ti\u1ebfng h\u00fa k\u1ecbp th\u1eddi, k\u1ebb gian s\u1ebd d\u1ec5 d\u00e0ng x\u00e2m nh\u1eadp.<\/p>\n<p data-path-to-node=\"15\">S\u1eed d\u1ee5ng <b data-path-to-node=\"15\" data-index-in-node=\"8\">c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> AL21 Kawasan gi\u00fap gi\u1ea3i quy\u1ebft tri\u1ec7t \u0111\u1ec3 v\u1ea5n \u0111\u1ec1 n\u00e0y. Nh\u1edd kh\u1ea3 n\u0103ng ph\u00e1t \u00e2m thanh 110dB k\u00e9o d\u00e0i 5 ph\u00fat, thi\u1ebft b\u1ecb khi\u1ebfn k\u1ebb gian ho\u1ea3ng s\u1ee3 b\u1ecf ch\u1ea1y. Gi\u1ea3i ph\u00e1p\u00a0n\u00e0y gi\u00fap b\u1ea3o v\u1ec7 t\u00e0i s\u1ea3n hi\u1ec7u qu\u1ea3 m\u00e0 kh\u00f4ng c\u1ea7n \u0111i d\u00e2y r\u01b0\u1eddm r\u00e0.<\/p>\n<h2 data-path-to-node=\"17\"><span class=\"ez-toc-section\" id=\"2_Thong_so_ky_thuat_noi_bat_cua_coi_bao_dong_AL21_Kawasan\"><\/span><span style=\"font-size: 21px;\">2. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u1ed5i b\u1eadt c\u1ee7a c\u00f2i b\u00e1o \u0111\u1ed9ng AL21 Kawasan<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-path-to-node=\"18\">This <a href=\"https:\/\/kawasan.vn\/en\/product\/coi-bao-dong-al21\/\"><b data-path-to-node=\"18\" data-index-in-node=\"4\">c\u00f2i b\u00e1o \u0111\u1ed9ng<\/b> AL21<\/a> s\u1edf h\u1eefu nhi\u1ec1u th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u1ea5n t\u01b0\u1ee3ng:<\/p>\n<ul data-path-to-node=\"19\">\n<li>\n<p data-path-to-node=\"19,0,0\"><b data-path-to-node=\"19,0,0\" data-index-in-node=\"0\">Ngu\u1ed3n \u0111i\u1ec7n ch\u00ednh:<\/b> AC 100\u2013220V c\u1ea5p ngu\u1ed3n tr\u1ef1c ti\u1ebfp v\u00e0 ho\u1ea1t \u0111\u1ed9ng b\u1ec1n b\u1ec9.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"19,1,0\"><b data-path-to-node=\"19,1,0\" data-index-in-node=\"0\">Pin s\u1ea1c d\u1ef1 ph\u00f2ng:<\/b> Dung l\u01b0\u1ee3ng 3.7V &#8211; 600mAh, duy tr\u00ec\u00a0t\u1eeb 6\u20138 gi\u1edd khi m\u1ea5t \u0111i\u1ec7n.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"19,2,0\"><b data-path-to-node=\"19,2,0\" data-index-in-node=\"0\">Operating Frequency:<\/b> T\u1ea7n s\u1ed1 RF 433MHz (chu\u1ea9n PT2262\/PT1527) thu ph\u00e1t xa 30\u201340m.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"19,3,0\"><b data-path-to-node=\"19,3,0\" data-index-in-node=\"0\">\u00c2m l\u01b0\u1ee3ng b\u00e1o \u0111\u1ed9ng:<\/b>\u00a0ph\u00e1t \u00e2m thanh t\u1ed1i \u0111a 110dB, c\u00f3 n\u00fat [SET] ch\u1ec9nh \u00e2m l\u01b0\u1ee3ng.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"19,4,0\"><b data-path-to-node=\"19,4,0\" data-index-in-node=\"0\">Kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i:<\/b> T\u00edch h\u1ee3p t\u1ed1i \u0111a 50 c\u1ea3m bi\u1ebfn kh\u00f4ng d\u00e2y v\u00e0 30 remote \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"19,5,0\"><b data-path-to-node=\"19,5,0\" data-index-in-node=\"0\">D\u00f2ng ti\u00eau th\u1ee5:<\/b> D\u00f2ng t\u0129nh ch\u01b0a b\u00e1o \u0111\u1ed9ng &lt;20mA v\u00e0 d\u00f2ng khi ph\u00e1t b\u00e1o \u0111\u1ed9ng &lt;200mA.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"19,6,0\"><b data-path-to-node=\"19,6,0\" data-index-in-node=\"0\">Th\u1eddi gian h\u00fa c\u00f2i:<\/b> M\u1eb7c \u0111\u1ecbnh ph\u00e1t \u00e2m thanh c\u1ea3nh b\u00e1o li\u00ean t\u1ee5c trong 5 ph\u00fat.<\/p>\n<\/li>\n<\/ul>\n<h2 data-path-to-node=\"21\"><span class=\"ez-toc-section\" id=\"3_Uu_diem_noi_bat_cua_he_thong_coi_bao_dong_khong_day_AL21\"><\/span><span style=\"font-size: 21px;\">3. \u01afu \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-path-to-node=\"22\">Installation <b data-path-to-node=\"22\" data-index-in-node=\"8\">c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> AL21 Kawasan mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch thi\u1ebft th\u1ef1c:<\/p>\n<ul data-path-to-node=\"23\">\n<li>\n<p data-path-to-node=\"23,0,0\"><b data-path-to-node=\"23,0,0\" data-index-in-node=\"0\">Ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp th\u00f4ng minh:<\/b> AL21 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t trung t\u00e2m an ninh mini nh\u1ecf g\u1ecdn.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"23,1,0\"><b data-path-to-node=\"23,1,0\" data-index-in-node=\"0\">T\u01b0\u01a1ng th\u00edch linh ho\u1ea1t:<\/b> k\u1ebft n\u1ed1i t\u1ed1t v\u1edbi SB60M\/SB100M, BK100M, \u0111\u1ea7u d\u00f2, b\u00e1o kh\u00f3i.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"23,2,0\"><b data-path-to-node=\"23,2,0\" data-index-in-node=\"0\">Kh\u00f4ng s\u1ee3 m\u1ea5t \u0111i\u1ec7n:<\/b> Pin s\u1ea1c d\u1ef1 ph\u00f2ng gi\u00fap h\u1ec7 th\u1ed1ng <b data-path-to-node=\"23,2,0\" data-index-in-node=\"50\">b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> v\u1eadn h\u00e0nh li\u00ean t\u1ee5c.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"23,3,0\"><b data-path-to-node=\"23,3,0\" data-index-in-node=\"0\">Thao t\u00e1c \u0111\u01a1n gi\u1ea3n:<\/b> Thi\u1ebft b\u1ecb cho ph\u00e9p h\u1ecdc l\u1ec7nh h\u1ecdc m\u00e3 nhanh ch\u00f3ng ch\u1ec9 trong v\u00e0i gi\u00e2y.<\/p>\n<\/li>\n<\/ul>\n<h2 data-path-to-node=\"25\"><span class=\"ez-toc-section\" id=\"4_3_Tinh_huong_ung_dung_thuc_te\"><\/span><span style=\"font-size: 21px;\">4. 3 T\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-path-to-node=\"26\"><span class=\"ez-toc-section\" id=\"41_Canh_bao_dot_nhap_cho_nha_o_chung_cu_va_can_ho_mini\"><\/span><span style=\"font-size: 18px;\">4.1. C\u1ea3nh b\u00e1o \u0111\u1ed9t nh\u1eadp cho nh\u00e0 \u1edf, chung c\u01b0 v\u00e0 c\u0103n h\u1ed9 mini<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-path-to-node=\"27\">G\u1eafn <b data-path-to-node=\"27\" data-index-in-node=\"4\">c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> AL21 \u1edf v\u1ecb tr\u00ed ri\u00eang bi\u1ec7t gi\u00fap b\u1ea3o v\u1ec7 kh\u00f4ng gian s\u1ed1ng. K\u1ebft n\u1ed1i c\u00f2i v\u1edbi c\u1ea3m bi\u1ebfn c\u1eeda t\u1eeb \u0111\u1ec3 ph\u00e1t hi\u1ec7n h\u00e0nh vi c\u1ea1y c\u1eeda t\u1ee9c th\u00ec. \u00c2m thanh\u00a0110dB s\u1ebd \u0111\u00e1nh th\u1ee9c c\u1ea3 gia \u0111\u00ecnh v\u00e0 l\u00e0m tr\u1ed9m ho\u1ea3ng s\u1ee3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"42_Bao_ve_an_ninh_cua_hang_tiem_vang\"><\/span><span style=\"font-size: 18px;\"><b>4.2. B\u1ea3o v\u1ec7 an ninh c\u1eeda h\u00e0ng, ti\u1ec7m v\u00e0ng<\/b><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">C\u1eeda h\u00e0ng v\u00e0 ti\u1ec7m v\u00e0ng lu\u00f4n c\u1ea7n gi\u1ea3i ph\u00e1p ph\u1ea3n \u1ee9ng nhanh khi x\u1ea3y ra s\u1ef1 c\u1ed1. K\u1ebft n\u1ed1i <\/span><b>c\u00f2i b\u00e1o \u0111\u1ed9ng<\/b><span style=\"font-weight: 400;\"> AL21 v\u1edbi BK100M \u0111\u1eb7t \u1edf h\u00e0ng r\u00e0o c\u1eeda h\u00e0ng. Khi c\u00f3 ng\u01b0\u1eddi \u0111\u1ed9t nh\u1eadp b\u01b0\u1edbc v\u00e0o s\u1ebd k\u00edch ho\u1ea1t <\/span><b>b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b><span style=\"font-weight: 400;\"> l\u1eadp t\u1ee9c.<\/span><\/p>\n<h3 data-path-to-node=\"32\"><span class=\"ez-toc-section\" id=\"43_Giam_sat_an_toan_cho_van_phong_nho_va_kho_chua_hang\"><\/span><span style=\"font-size: 18px;\">4.3. Gi\u00e1m s\u00e1t an to\u00e0n cho v\u0103n ph\u00f2ng nh\u1ecf v\u00e0 kho ch\u1ee9a h\u00e0ng<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-path-to-node=\"33\">Kho h\u00e0ng d\u1ec5 b\u1ecb k\u1ebb gian \u0111\u1ed9t nh\u1eadp v\u00e0o ban \u0111\u00eam qua c\u1eeda s\u1ed5 hay l\u1ed1i \u0111i ph\u1ee5. D\u00f9ng <b data-path-to-node=\"33\" data-index-in-node=\"76\">c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> AL21 k\u1ebft h\u1ee3p \u0111\u1ea7u d\u00f2 chuy\u1ec3n \u0111\u1ed9ng \u0111\u1ec3 qu\u00e9t khu v\u1ef1c c\u1ea5m. <b data-path-to-node=\"33\" data-index-in-node=\"152\">C\u00f2i b\u00e1o \u0111\u1ed9ng<\/b> h\u00fa to s\u1ebd l\u1eadp t\u1ee9c b\u00e1o cho b\u1ea3o v\u1ec7 \u0111\u1ebfn x\u1eed l\u00fd.<\/p>\n<h2 data-path-to-node=\"36\"><span class=\"ez-toc-section\" id=\"5_Huong_dan_cai_dat_va_su_dung_coi_AL21_chuan_ky_thuat\"><\/span><span style=\"font-size: 21px;\">5. H\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t v\u00e0 s\u1eed d\u1ee5ng c\u00f2i AL21 chu\u1ea9n k\u1ef9 thu\u1eadt<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-path-to-node=\"37\">Quy tr\u00ecnh c\u00e0i \u0111\u1eb7t <b data-path-to-node=\"37\" data-index-in-node=\"18\">c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> AL21 Kawasan g\u1ed3m c\u00e1c b\u01b0\u1edbc:<\/p>\n<ol start=\"1\" data-path-to-node=\"38\">\n<li>\n<p data-path-to-node=\"38,0,0\"><b data-path-to-node=\"38,0,0\" data-index-in-node=\"0\">Th\u00eam c\u1ea3m bi\u1ebfn ho\u1eb7c remote v\u00e0o c\u00f2i:<\/b><\/p>\n<ul data-path-to-node=\"38,0,1\">\n<li>\n<p data-path-to-node=\"38,0,1,0,0\">G\u1ea1t c\u00f4ng t\u1eafc ngu\u1ed3n tr\u00ean c\u00f2i AL21 sang v\u1ecb tr\u00ed ON.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1,1,0\">Nh\u1ea5n gi\u1eef n\u00fat [SET] kho\u1ea3ng 6 gi\u00e2y cho \u0111\u1ebfn khi \u0111\u00e8n LED s\u00e1ng.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,0,1,2,0\">K\u00edch ho\u1ea1t c\u1ea3m bi\u1ebfn ho\u1eb7c b\u1ea5m remote \u0111\u1ec3 ph\u00e1t t\u00edn hi\u1ec7u h\u1ecdc m\u00e3. C\u00f2i k\u00eau &#8220;b\u00edp&#8221; l\u00e0 c\u00e0i \u0111\u1eb7t th\u00e0nh c\u00f4ng.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p data-path-to-node=\"38,1,0\"><b data-path-to-node=\"38,1,0\" data-index-in-node=\"0\">X\u00f3a to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb \u0111\u00e3 t\u00edch h\u1ee3p:<\/b><\/p>\n<ul data-path-to-node=\"38,1,1\">\n<li>\n<p data-path-to-node=\"38,1,1,0,0\">G\u1ea1t c\u00f4ng t\u1eafc sang ON v\u00e0 nh\u1ea5n gi\u1eef n\u00fat [SET] 6 gi\u00e2y \u0111\u1ebfn khi \u0111\u00e8n LED s\u00e1ng.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,1,1,1,0\">Nh\u1ea5n gi\u1eef n\u00fat [SET] l\u1ea7n 2 cho \u0111\u1ebfn khi <b data-path-to-node=\"38,1,1,1,0\" data-index-in-node=\"37\">c\u00f2i b\u00e1o \u0111\u1ed9ng<\/b> ph\u00e1t 6 ti\u1ebfng &#8220;b\u00edp&#8221;.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p data-path-to-node=\"38,2,0\"><b data-path-to-node=\"38,2,0\" data-index-in-node=\"0\">Thay \u0111\u1ed5i \u00e2m l\u01b0\u1ee3ng b\u00e1o \u0111\u1ed9ng:<\/b><\/p>\n<ul data-path-to-node=\"38,2,1\">\n<li>\n<p data-path-to-node=\"38,2,1,0,0\">Nh\u1ea5n n\u00fat [SET] nhi\u1ec1u l\u1ea7n \u0111\u1ec3 chuy\u1ec3n qua c\u00e1c m\u1ee9c \u00e2m l\u01b0\u1ee3ng ph\u00f9 h\u1ee3p kh\u00f4ng gian.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p data-path-to-node=\"38,3,0\"><b data-path-to-node=\"38,3,0\" data-index-in-node=\"0\">L\u01b0u \u00fd quan tr\u1ecdng:<\/b><\/p>\n<ul data-path-to-node=\"38,3,1\">\n<li>\n<p data-path-to-node=\"38,3,1,0,0\">This <b data-path-to-node=\"38,3,1,0,0\" data-index-in-node=\"4\">c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> n\u00e0y b\u00e1o \u0111\u1ed9ng t\u1ea1i ch\u1ed7, kh\u00f4ng b\u00e1o qua \u0111i\u1ec7n tho\u1ea1i.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"38,3,1,1,0\">N\u00ean l\u1eafp c\u00f2i \u1edf v\u1ecb tr\u00ed ri\u00eang bi\u1ec7t trong nh\u00e0, tr\u00e1nh m\u01b0a n\u1eafng v\u00e0 tr\u00e1nh k\u1ebb gian l\u1ea5y c\u1eafp.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2 data-path-to-node=\"40\"><span class=\"ez-toc-section\" id=\"6_MOT_SO_SU_CO_VA_CACH_KHAC_PHUC\"><\/span><span style=\"font-size: 21px;\">6. M\u1ed8T S\u1ed0 S\u1ef0 C\u1ed0 V\u00c0 C\u00c1CH KH\u1eaeC PH\u1ee4C<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-path-to-node=\"41\">Trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh <b data-path-to-node=\"41\" data-index-in-node=\"25\">c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> AL21 Kawasan, b\u1ea1n x\u1eed l\u00fd nh\u01b0 sau:<\/p>\n<ul data-path-to-node=\"42\">\n<li>\n<p data-path-to-node=\"42,0,0\"><b data-path-to-node=\"42,0,0\" data-index-in-node=\"0\">C\u1ea3m bi\u1ebfn k\u00edch ho\u1ea1t nh\u01b0ng c\u00f2i AL21 kh\u00f4ng h\u00fa:<\/b><\/p>\n<ul data-path-to-node=\"42,0,1\">\n<li>\n<p data-path-to-node=\"42,0,1,0,0\">Ki\u1ec3m tra c\u00f4ng t\u1eafc ngu\u1ed3n c\u1ee7a <b data-path-to-node=\"42,0,1,0,0\" data-index-in-node=\"28\">c\u00f2i b\u00e1o \u0111\u1ed9ng<\/b> \u0111\u00e3 g\u1ea1t sang ON ch\u01b0a.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"42,0,1,1,0\">Ki\u1ec3m tra xem c\u1ea3m bi\u1ebfn \u0111\u00e3 h\u1ecdc m\u00e3 th\u00e0nh c\u00f4ng v\u1edbi c\u00f2i AL21 ch\u01b0a.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"42,0,1,2,0\">Ki\u1ec3m tra kho\u1ea3ng c\u00e1ch truy\u1ec1n s\u00f3ng <b data-path-to-node=\"42,0,1,2,0\" data-index-in-node=\"33\">b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y<\/b> c\u00f3 b\u1ecb v\u01b0\u1ee3t qu\u00e1 40m kh\u00f4ng.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p data-path-to-node=\"42,1,0\"><b data-path-to-node=\"42,1,0\" data-index-in-node=\"0\">\u00c2m thanh c\u00f2i b\u00e1o ph\u00e1t ra qu\u00e1 nh\u1ecf:<\/b><\/p>\n<ul data-path-to-node=\"42,1,1\">\n<li>\n<p data-path-to-node=\"42,1,1,0,0\">Nh\u1ea5n n\u00fat [SET] nhi\u1ec1u l\u1ea7n \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh l\u1ea1i m\u1ee9c \u00e2m l\u01b0\u1ee3ng b\u00e1o \u0111\u1ed9ng l\u1edbn h\u01a1n.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"42,1,1,1,0\">Ki\u1ec3m tra xem c\u00f2i c\u00f3 \u0111ang d\u00f9ng pin s\u1ea1c d\u1ef1 ph\u00f2ng khi b\u1ecb ng\u1eaft \u0111i\u1ec7n ngu\u1ed3n AC kh\u00f4ng.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p data-path-to-node=\"42,2,0\"><b data-path-to-node=\"42,2,0\" data-index-in-node=\"0\">C\u00f2i t\u1ef1 \u0111\u1ed9ng h\u00fa d\u00f9 kh\u00f4ng c\u00f3 \u0111\u1ed9t nh\u1eadp:<\/b><\/p>\n<ul data-path-to-node=\"42,2,1\">\n<li>\n<p data-path-to-node=\"42,2,1,0,0\">Ki\u1ec3m tra xem c\u00f3 c\u1ea3m bi\u1ebfn n\u00e0o b\u1ecb h\u1ecfng ho\u1eb7c ph\u00e1t t\u00edn hi\u1ec7u b\u00e1o \u0111\u1ed9ng gi\u1ea3 kh\u00f4ng.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"42,2,1,1,0\">X\u00f3a to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb v\u00e0 ti\u1ebfn h\u00e0nh c\u00e0i \u0111\u1eb7t h\u1ecdc m\u00e3 l\u1ea1i t\u1eeb \u0111\u1ea7u cho c\u00f2i.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 data-path-to-node=\"11\"><span class=\"ez-toc-section\" id=\"TAI_SAO_NEN_CHON_KAWASAN\"><\/span><span style=\"font-size: 21px;\"><strong>WHY CHOOSE KAWASAN?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>A leading Vietnamese brand in the fields of automatic electrical equipment, security, safety, and smart electrical devices since 2007, as well as residential LED lighting and solar lighting since 2012.<\/li>\n<li>High durability with selected components \u2013 Stable operation even in harsh weather conditions<\/li>\n<li>Superior warranty policy \u2013 Repair support is available even after the warranty period if the product can still be restored<\/li>\n<li>Kawasan currently has its head office in Ho Chi Minh City, branches in Hanoi and Da Nang, and a production and assembly workshop in District 12, Ho Chi Minh City.<\/li>\n<li>24\/7 support service and a nationwide dealer network<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cam_ket_tu_Kawasan\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span id=\"Cam_ket_tu_Kawasan\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 21px;\">Kawasan Commitment<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Kawasan is committed to providing products\u00a0<strong>genuine \u2013 durable \u2013 safe<\/strong>, fully meeting technical standards and practical usage requirements.<\/p>\n<p>All products are covered by warranty\u00a0<strong>free of charge for 24 months<\/strong>,\u00a0<strong>1-for-1 replacement within 30 days<\/strong>\u00a0if it is a technical defect. In addition, customers are also supported with repair services after the warranty period if the product can still be restored,\u00a0<strong>free of charge<\/strong>\u00a0if the cost of replacement components is insignificant.<\/p>\n<p>Customers can purchase products at authorized dealers within\u00a0<strong><a href=\"https:\/\/kawasan.vn\/en\/he-thong-phan-phoi\/\" target=\"_blank\" rel=\"noopener\">NATIONWIDE DISTRIBUTION SYSTEM<\/a><\/strong>\u00a0provinces and cities nationwide, or place orders on the website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Mua_chinh_hang_tai\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span id=\"Mua_chinh_hang_tai\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 21px;\">Buy genuine products at:<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Contact the sales department directly for wholesale, dealer \/ distributor pricing:\u00a0<strong>0825 411 408 \/ 0911 757 234<\/strong><\/li>\n<li>Website:\u00a0<a href=\"https:\/\/kawasan.vn\/en\/\" target=\"_blank\" rel=\"noopener\">www.kawasan.vn<\/a>\u00a0(For Kawasan products)<\/li>\n<li>Website:\u00a0<a href=\"https:\/\/www.kawaled.com.vn\/\" target=\"_blank\" rel=\"noopener\">www.kawaled.com.vn<\/a>\u00a0(For Kawaled products)<\/li>\n<li>BUY NOW\u00a0<a href=\"https:\/\/kawasan.vn\/en\/product\/coi-bao-dong-al21\/\"><strong>PRODUCT LINK<\/strong><\/a><\/li>\n<li>Ho\u1eb7c t\u00ecm mua tr\u00ean c\u00e1c s\u00e0n th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed Shopee, Lazada, Tiktok<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>L\u1eafp c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21 Kawasan l\u00e0 gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 an to\u00e0n t\u1ed1i \u01b0u cho m\u1ecdi c\u00f4ng tr\u00ecnh. D\u00f2ng c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung t\u00e2m b\u00e1o \u0111\u1ed9ng mini ti\u1ec7n l\u1ee3i. Trang b\u1ecb h\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21 gi\u00fap xua \u0111u\u1ed5i k\u1ebb gian ngay l\u1eadp [&hellip;]<\/p>","protected":false},"author":1,"featured_media":36856,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"c\u00f2i b\u00e1o \u0111\u1ed9ng","_yoast_wpseo_metadesc":"C\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21 ph\u00e1t \u00e2m l\u01b0\u1ee3ng 110dB. Thi\u1ebft b\u1ecb \u0111\u00f3ng vai tr\u00f2 nh\u01b0 trung t\u00e2m b\u00e1o \u0111\u1ed9ng mini gi\u00fap b\u1ea3o v\u1ec7 an ninh gia \u0111\u00ecnh hi\u1ec7u qu\u1ea3.","_yoast_wpseo_focuskeywords":"[{\"keyword\":\"c\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y\",\"score\":100},{\"keyword\":\"b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y\",\"score\":100}]","_yoast_wpseo_keyword_synonyms":"","footnotes":""},"categories":[1],"tags":[2976,2978,1952,2979,2977,1413,2980],"class_list":["post-36840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-cong-nghe","tag-al21","tag-bao-dong-khong-day","tag-coi-bao-dong","tag-coi-bao-dong-110db","tag-coi-bao-dong-khong-day","tag-kawasan","tag-trung-tam-bao-dong-mini"],"acf":[],"featured_image_src":{"landsacpe":["https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2-1080x445.png",1080,445,true],"list":["https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2-463x348.png",463,348,true],"medium":["https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2-300x300.png",300,300,true],"full":["https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2.png",1080,1080,false]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.9 (Yoast SEO v24.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00f2i B\u00e1o \u0110\u1ed9ng Kh\u00f4ng D\u00e2y AL21: C\u1ea3nh B\u00e1o An Ninh \u00c2m L\u01b0\u1ee3ng L\u1edbn<\/title>\n<meta name=\"description\" content=\"C\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21 ph\u00e1t \u00e2m l\u01b0\u1ee3ng 110dB. Thi\u1ebft b\u1ecb \u0111\u00f3ng vai tr\u00f2 nh\u01b0 trung t\u00e2m b\u00e1o \u0111\u1ed9ng mini gi\u00fap b\u1ea3o v\u1ec7 an ninh gia \u0111\u00ecnh hi\u1ec7u qu\u1ea3.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00f2i B\u00e1o \u0110\u1ed9ng Kh\u00f4ng D\u00e2y AL21: C\u1ea3nh B\u00e1o An Ninh \u00c2m L\u01b0\u1ee3ng L\u1edbn\" \/>\n<meta property=\"og:description\" content=\"C\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21 ph\u00e1t \u00e2m l\u01b0\u1ee3ng 110dB. Thi\u1ebft b\u1ecb \u0111\u00f3ng vai tr\u00f2 nh\u01b0 trung t\u00e2m b\u00e1o \u0111\u1ed9ng mini gi\u00fap b\u1ea3o v\u1ec7 an ninh gia \u0111\u00ecnh hi\u1ec7u qu\u1ea3.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kawasan.vn\/en\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/\" \/>\n<meta property=\"og:site_name\" content=\"Kawasan\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-16T09:34:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1080\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/kawasan.vn\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/\",\"url\":\"https:\/\/kawasan.vn\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/\",\"name\":\"C\u00f2i B\u00e1o \u0110\u1ed9ng Kh\u00f4ng D\u00e2y AL21: C\u1ea3nh B\u00e1o An Ninh \u00c2m L\u01b0\u1ee3ng L\u1edbn\",\"isPartOf\":{\"@id\":\"https:\/\/kawasan.vn\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/kawasan.vn\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/kawasan.vn\/coi-bao-dong-khong-day-al21-canh-bao-an-ninh\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/AL21-2.png\",\"datePublished\":\"2026-09-16T09:34:57+00:00\",\"author\":{\"@id\":\"https:\/\/kawasan.vn\/#\/schema\/person\/b3e824b0d41c07a10823cc67b6d972f9\"},\"description\":\"C\u00f2i b\u00e1o \u0111\u1ed9ng kh\u00f4ng d\u00e2y AL21 ph\u00e1t \u00e2m l\u01b0\u1ee3ng 110dB. 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