{"id":29909,"date":"2026-01-12T10:48:32","date_gmt":"2026-01-12T03:48:32","guid":{"rendered":"https:\/\/kawasan.vn\/?post_type=product&#038;p=29909"},"modified":"2026-06-05T13:58:59","modified_gmt":"2026-06-05T06:58:59","slug":"dau-phat-chuong-khong-day-kawasan-b81a","status":"publish","type":"product","link":"https:\/\/kawasan.vn\/en\/product\/dau-phat-chuong-khong-day-kawasan-b81a\/","title":{"rendered":"\u0110\u1ea6U PH\u00c1T CHU\u00d4NG KH\u00d4NG D\u00c2Y KAWASAN B81A"},"content":{"rendered":"<h2 data-path-to-node=\"13\"><span class=\"ez-toc-section\" id=\"Gioi_Thieu_Thiet_Bi_Dau_Phat_Chuong_Khong_Day_Kawasan_B81A\"><\/span>Gi\u1edbi Thi\u1ec7u Thi\u1ebft B\u1ecb \u0110\u1ea7u Ph\u00e1t Chu\u00f4ng Kh\u00f4ng D\u00e2y Kawasan B81A<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\/product\/dau-phat-chuong-khong-day-kawasan-b81a\/#Gioi_Thieu_Thiet_Bi_Dau_Phat_Chuong_Khong_Day_Kawasan_B81A\" title=\"Gi\u1edbi Thi\u1ec7u Thi\u1ebft B\u1ecb \u0110\u1ea7u Ph\u00e1t Chu\u00f4ng Kh\u00f4ng D\u00e2y Kawasan B81A\">Gi\u1edbi Thi\u1ec7u Thi\u1ebft B\u1ecb \u0110\u1ea7u Ph\u00e1t Chu\u00f4ng Kh\u00f4ng D\u00e2y Kawasan B81A<\/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\/product\/dau-phat-chuong-khong-day-kawasan-b81a\/#Nguyen_ly_hoat_dong\" title=\"Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng\">Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/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\/product\/dau-phat-chuong-khong-day-kawasan-b81a\/#Tinh_nang_va_dac_diem\" title=\"T\u00ednh n\u0103ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m\">T\u00ednh n\u0103ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m<\/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\/product\/dau-phat-chuong-khong-day-kawasan-b81a\/#Thong_so_ky_thuat\" title=\"Specifications\">Specifications<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kawasan.vn\/en\/product\/dau-phat-chuong-khong-day-kawasan-b81a\/#Ung_dung\" title=\"\u1ee8ng d\u1ee5ng\">\u1ee8ng d\u1ee5ng<\/a><\/li><\/ul><\/nav><\/div>\n\n<p data-path-to-node=\"14\">Trong cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i v\u00e0 gi\u1ea3i ph\u00e1p ti\u1ec7n \u00edch smarthome ng\u00e0y nay. Vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u00e1c h\u1ec7 th\u1ed1ng chu\u00f4ng b\u00e1o kh\u00e1ch th\u00f4ng minh v\u00f4 c\u00f9ng ph\u1ed5 bi\u1ebfn. H\u1ec7 th\u1ed1ng gi\u00fap gia ch\u1ee7 nhanh ch\u00f3ng ti\u1ebfp nh\u1eadn th\u00f4ng tin khi c\u00f3 ng\u01b0\u1eddi gh\u00e9 th\u0103m. Do \u0111\u00f3, d\u00f2ng s\u1ea3n ph\u1ea9m <b data-path-to-node=\"14\" data-index-in-node=\"237\">\u0111\u1ea7u ph\u00e1t chu\u00f4ng kh\u00f4ng d\u00e2y<\/b> Kawasan B81A \u0111\u00e3 \u0111\u01b0\u1ee3c ra \u0111\u1eddi.<\/p>\n<p data-path-to-node=\"15\">\u0110\u00e2y l\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n th\u00f4ng minh s\u1eed d\u1ee5ng ngu\u1ed3n \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp d\u1ea3i 220V\u2013240V. Thi\u1ebft b\u1ecb \u0111\u00f3ng vai tr\u00f2 c\u1ed1t l\u00f5i trong vi\u1ec7c ti\u1ebfp nh\u1eadn c\u00e1c t\u00edn hi\u1ec7u t\u1eeb n\u00fat nh\u1ea5n. M\u1ea1ch m\u00e1y t\u01b0\u01a1ng th\u00edch ho\u00e0n h\u1ea3o v\u1edbi d\u00f2ng n\u00fat nh\u1ea5n kh\u00f4ng d\u00f9ng pin m\u00e3 hi\u1ec7u D81A. S\u1ea3n ph\u1ea9m th\u1ef1c hi\u1ec7n nhi\u1ec7m v\u1ee5 ph\u00e1t \u00e2m thanh chu\u00f4ng b\u00e1o kh\u00e1ch m\u1ed9t c\u00e1ch t\u1ee9c th\u00ec. \u0110\u1ec3 xem th\u00eam c\u00e1c gi\u1ea3i ph\u00e1p th\u00f4ng minh ch\u1ea5t l\u01b0\u1ee3ng cao kh\u00e1c, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o tr\u1ef1c ti\u1ebfp t\u1ea1i danh m\u1ee5c <a class=\"ng-star-inserted\" href=\"https:\/\/kawasan.vn\/en\/\" target=\"_blank\" rel=\"noopener\" data-hveid=\"0\" data-ved=\"0CAAQ_4QMahgKEwi1svnok--UAxUAAAAAHQAAAAAQ-Qw\">s\u1ea3n ph\u1ea9m \u0111i\u1ec7n th\u00f4ng minh KAWASAN<\/a>.<\/p>\n<p data-path-to-node=\"16\">M\u1eabu chu\u00f4ng cao c\u1ea5p n\u00e0y \u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft k\u1ebf chuy\u00ean d\u1ee5ng \u0111\u1ec3 l\u1eafp \u0111\u1eb7t trong nh\u00e0. Thi\u1ebft b\u1ecb s\u1edf h\u1eefu kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng v\u00f4 c\u00f9ng \u1ed5n \u0111\u1ecbnh v\u00e0 li\u00ean t\u1ee5c h\u1eb1ng ng\u00e0y. Do s\u1eed d\u1ee5ng ngu\u1ed3n \u0111i\u1ec7n c\u1eafm tr\u1ef1c ti\u1ebfp n\u00ean m\u00e1y ho\u00e0n to\u00e0n kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o dung l\u01b0\u1ee3ng pin. L\u1ee3i th\u1ebf c\u00f4ng ngh\u1ec7 m\u1edbi mang l\u1ea1i s\u1ef1 ti\u1ec7n nghi tuy\u1ec7t \u0111\u1ed1i cho kh\u00f4ng gian s\u1ed1ng c\u1ee7a b\u1ea1n.<\/p>\n<h2 data-start=\"2051\" data-end=\"2075\"><span class=\"ez-toc-section\" id=\"Nguyen_ly_hoat_dong\"><\/span>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"2076\" data-end=\"2251\">B81A nh\u1eadn t\u00edn hi\u1ec7u kh\u00f4ng d\u00e2y RF t\u1eeb n\u00fat nh\u1ea5n D81A v\u00e0 ph\u00e1t \u00e2m thanh chu\u00f4ng ngay l\u1eadp t\u1ee9c. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh ki\u1ec3u chu\u00f4ng v\u00e0 \u00e2m l\u01b0\u1ee3ng ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng kh\u00f4ng gian s\u1eed d\u1ee5ng.<\/p>\n<h2 data-start=\"2253\" data-end=\"2279\"><span class=\"ez-toc-section\" id=\"Tinh_nang_va_dac_diem\"><\/span>T\u00ednh n\u0103ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li data-start=\"2282\" data-end=\"2332\">S\u1eed d\u1ee5ng ngu\u1ed3n \u0111i\u1ec7n tr\u1ef1c ti\u1ebfp 220V, kh\u00f4ng c\u1ea7n pin<\/li>\n<li data-start=\"2335\" data-end=\"2389\">Nh\u1eadn t\u00edn hi\u1ec7u nhanh v\u00e0 \u1ed5n \u0111\u1ecbnh t\u1eeb n\u00fat nh\u1ea5n kh\u00f4ng pin<\/li>\n<li data-start=\"2392\" data-end=\"2428\">H\u1ed7 tr\u1ee3 nhi\u1ec1u ki\u1ec3u chu\u00f4ng kh\u00e1c nhau<\/li>\n<li data-start=\"2431\" data-end=\"2469\">C\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u00e2m l\u01b0\u1ee3ng linh ho\u1ea1t<\/li>\n<li data-start=\"2472\" data-end=\"2499\">\u00c2m thanh r\u00f5 r\u00e0ng, d\u1ec5 nghe<\/li>\n<li data-start=\"2502\" data-end=\"2554\">Thi\u1ebft k\u1ebf g\u1ecdn g\u00e0ng, ph\u00f9 h\u1ee3p nhi\u1ec1u kh\u00f4ng gian n\u1ed9i th\u1ea5t<\/li>\n<\/ul>\n<h2 data-start=\"2556\" data-end=\"2578\"><span class=\"ez-toc-section\" id=\"Thong_so_ky_thuat\"><\/span>Specifications<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li data-start=\"2581\" data-end=\"2618\">Ngu\u1ed3n \u0111i\u1ec7n: 220V \u2013 240V AC, 50\/60Hz<\/li>\n<li data-start=\"2621\" data-end=\"2649\">Ki\u1ec3u k\u1ebft n\u1ed1i: Kh\u00f4ng d\u00e2y RF<\/li>\n<li data-start=\"2652\" data-end=\"2703\">\u00c2m l\u01b0\u1ee3ng: C\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh (t\u1ed1i \u0111a kho\u1ea3ng 70 dB)<\/li>\n<li data-start=\"2706\" data-end=\"2773\">Kho\u1ea3ng c\u00e1ch nh\u1eadn t\u00edn hi\u1ec7u: kho\u1ea3ng 30\u201380 m (t\u00f9y \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf)<\/li>\n<li data-start=\"2776\" data-end=\"2816\">Chu\u1ea9n b\u1ea3o v\u1ec7: IP20 (s\u1eed d\u1ee5ng trong nh\u00e0)<\/li>\n<li data-start=\"2819\" data-end=\"2843\">Ch\u1ea5t li\u1ec7u v\u1ecf: Nh\u1ef1a ABS<\/li>\n<li data-start=\"2846\" data-end=\"2862\">M\u00e0u s\u1eafc: Tr\u1eafng<\/li>\n<\/ul>\n<h2 data-start=\"2864\" data-end=\"2877\"><span class=\"ez-toc-section\" id=\"Ung_dung\"><\/span>\u1ee8ng d\u1ee5ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li data-start=\"2880\" data-end=\"2895\">Nh\u00e0 \u1edf, c\u0103n h\u1ed9<\/li>\n<li data-start=\"2898\" data-end=\"2918\">V\u0103n ph\u00f2ng l\u00e0m vi\u1ec7c<\/li>\n<li data-start=\"2921\" data-end=\"2944\">C\u1eeda h\u00e0ng, qu\u1ea7y l\u1ec5 t\u00e2n<\/li>\n<li data-start=\"2947\" data-end=\"2972\">Nh\u00e0 tr\u1ecd, ph\u00f2ng cho thu\u00ea<\/li>\n<li data-start=\"2975\" data-end=\"3032\">Thay th\u1ebf \u0111\u1ea7u chu\u00f4ng trong c\u00e1c b\u1ed9 chu\u00f4ng kh\u00f4ng d\u00e2y Kawasan<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi Thi\u1ec7u Thi\u1ebft B\u1ecb \u0110\u1ea7u Ph\u00e1t Chu\u00f4ng Kh\u00f4ng D\u00e2y Kawasan B81A Trong cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i v\u00e0 gi\u1ea3i ph\u00e1p ti\u1ec7n \u00edch smarthome ng\u00e0y nay. Vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u00e1c h\u1ec7 th\u1ed1ng chu\u00f4ng b\u00e1o kh\u00e1ch th\u00f4ng minh v\u00f4 c\u00f9ng ph\u1ed5 bi\u1ebfn. H\u1ec7 th\u1ed1ng gi\u00fap gia ch\u1ee7 nhanh ch\u00f3ng ti\u1ebfp nh\u1eadn th\u00f4ng tin khi c\u00f3 ng\u01b0\u1eddi gh\u00e9 th\u0103m. [&hellip;]<\/p>","protected":false},"featured_media":29914,"comment_status":"open","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"\u0110\u1ea6U PH\u00c1T CHU\u00d4NG KH\u00d4NG D\u00c2Y","_yoast_wpseo_metadesc":"\u0110\u1ea7u Ph\u00e1t Chu\u00f4ng Kh\u00f4ng D\u00e2y Kawasan B81A d\u00f9ng ngu\u1ed3n 220V tr\u1ef1c ti\u1ebfp. Thi\u1ebft b\u1ecb nh\u1eadn t\u00edn hi\u1ec7u nhanh t\u1eeb n\u00fat nh\u1ea5n kh\u00f4ng pin D81A ch\u00ednh x\u00e1c. Mua ngay gi\u00e1 t\u1ed1t!","_yoast_wpseo_focuskeywords":"","_yoast_wpseo_keyword_synonyms":""},"product_cat":[15],"product_tag":[],"class_list":["post-29909","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-cong-tac-cam-ung-chuyen-dong"],"acf":[],"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>\u0110\u1ea7u Ph\u00e1t Chu\u00f4ng Kh\u00f4ng D\u00e2y Kawasan B81A Ch\u00ednh H\u00e3ng<\/title>\n<meta name=\"description\" content=\"\u0110\u1ea7u Ph\u00e1t Chu\u00f4ng Kh\u00f4ng D\u00e2y Kawasan B81A d\u00f9ng ngu\u1ed3n 220V tr\u1ef1c ti\u1ebfp. Thi\u1ebft b\u1ecb nh\u1eadn t\u00edn hi\u1ec7u nhanh t\u1eeb n\u00fat nh\u1ea5n kh\u00f4ng pin D81A ch\u00ednh x\u00e1c. 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