{"id":12663,"date":"2023-11-19T03:53:32","date_gmt":"2023-11-19T03:53:32","guid":{"rendered":"https:\/\/kawasan.123websitedev.com\/?post_type=product&#038;p=12663"},"modified":"2026-09-25T13:29:31","modified_gmt":"2026-09-25T06:29:31","slug":"chuong-cua-khong-day-dieu-khien-tu-xa-db669-2rm1a","status":"publish","type":"product","link":"https:\/\/kawasan.vn\/en\/product\/chuong-cua-khong-day-dieu-khien-tu-xa-db669-2rm1a\/","title":{"rendered":"DB669-2R Remote-Controlled Wireless Doorbell"},"content":{"rendered":"<h2><span class=\"ez-toc-section\" id=\"CHUONG_CUA_KHONG_DAY_LA_GI\"><\/span>WHAT IS A WIRELESS DOORBELL?<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\/chuong-cua-khong-day-dieu-khien-tu-xa-db669-2rm1a\/#CHUONG_CUA_KHONG_DAY_LA_GI\" title=\"WHAT IS A WIRELESS DOORBELL?\">WHAT IS A WIRELESS DOORBELL?<\/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\/chuong-cua-khong-day-dieu-khien-tu-xa-db669-2rm1a\/#MAU_CHUONG_CUA_DB669_BAN_CHAY_NHAT_HIEN_NAY\" title=\"DB669 \u2013 ONE OF THE MOST POPULAR WIRELESS DOORBELL MODELS\">DB669 \u2013 ONE OF THE MOST POPULAR WIRELESS DOORBELL MODELS<\/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\/chuong-cua-khong-day-dieu-khien-tu-xa-db669-2rm1a\/#THIET_KE_DOT_PHA_TINH_NANG_TICH_HOP_CAO_VA_THEM_DUOC_REMOTE_DIEU_KHIEN_TU_XA\" title=\"ADVANCED DESIGN WITH HIGH EXPANDABILITY AND REMOTE CONTROL SUPPORT\">ADVANCED DESIGN WITH HIGH EXPANDABILITY AND REMOTE CONTROL SUPPORT<\/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\/chuong-cua-khong-day-dieu-khien-tu-xa-db669-2rm1a\/#SU_KHAC_BIET_CUA_CHUONG_CUA_KHONG_DAY_KAWASAN_SO_VOI_NHUNG_SAN_PHAM_CUNG_LOAI_TREN_THI_TRUONG\" title=\"DIFFERENCES BETWEEN KAWASAN WIRELESS DOORBELLS AND SIMILAR PRODUCTS ON THE MARKET\">DIFFERENCES BETWEEN KAWASAN WIRELESS DOORBELLS AND SIMILAR PRODUCTS ON THE MARKET<\/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\/chuong-cua-khong-day-dieu-khien-tu-xa-db669-2rm1a\/#UNG_DUNG_CHUONG_DIEN_KHONG_DAY_DB669\" title=\"APPLICATIONS OF THE DB669 WIRELESS DOORBELL\">APPLICATIONS OF THE DB669 WIRELESS DOORBELL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/kawasan.vn\/en\/product\/chuong-cua-khong-day-dieu-khien-tu-xa-db669-2rm1a\/#LOI_ICH_CUA_CHUONG_CUA_KHONG_DAY_CHONG_NUOC\" title=\"BENEFITS OF A WATER-RESISTANT WIRELESS DOORBELL\">BENEFITS OF A WATER-RESISTANT WIRELESS DOORBELL<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Chu\u00f4ng c\u1eeda kh\u00f4ng d\u00e2y\u00a0l\u00e0 thi\u1ebft b\u1ecb b\u00e1o hi\u1ec7u c\u00f3 kh\u00e1ch ho\u1eb7c c\u00f3 ng\u01b0\u1eddi \u1edf ngo\u00e0i c\u1ea7n v\u00e0o nh\u00e0. Ng\u00e0y nay nh\u00e0 \u1edf \u0111\u01b0\u1ee3c x\u00e2y t\u1ea7ng nhi\u1ec1u v\u00e0 k\u00edn n\u00ean kh\u00f3 c\u00f3 th\u1ec3 k\u00eau b\u1eb1ng mi\u1ec7ng ho\u1eb7c d\u00f9ng chu\u00f4ng c\u1eeda c\u00f3 d\u00e2y. L\u00fac n\u00e0y, s\u1ebd b\u1ecb h\u1ea1n ch\u1ebf n\u1ebfu ng\u01b0\u1eddi trong nh\u00e0 \u1edf g\u1ea7n c\u1ed5ng th\u00ec c\u00f3 th\u1ec3 nghe nh\u01b0ng n\u1ebfu \u1edf t\u1ea7ng cao th\u00ec kh\u00f3 nghe \u0111\u01b0\u1ee3c.<\/p>\n<p>V\u00ec th\u1ebf\u2026.<\/p>\n<p>Chu\u00f4ng b\u1ea5m c\u1eeda kh\u00f4ng d\u00e2y ra \u0111\u1eddi v\u00e0 ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn v\u00e0 \u01b0a chu\u1ed9ng. B\u1edfi t\u00ednh ti\u1ec7n l\u1ee3i kh\u00f4ng c\u1ea7n ph\u1ea3i \u0111i d\u00e2y r\u01b0\u1eddm r\u00e0. Thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn d\u1ec5 di chuy\u1ec3n l\u1eafp \u0111\u1eb7t v\u00e0 \u0111a d\u1ea1ng m\u1eabu m\u00e3.<\/p>\n<div id=\"attachment_5804\" class=\"wp-caption aligncenter\">\n<figure id=\"attachment_16392\" aria-describedby=\"caption-attachment-16392\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16392\" title=\"DB669 Wireless Doorbell\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/chuong-cua-khong-day-db669-2rm1a-1.png\" alt=\"Chu\u00f4ng b\u1ea5m c\u1eeda kh\u00f4ng d\u00e2y DB669\" width=\"600\" height=\"600\" \/><figcaption id=\"caption-attachment-16392\" class=\"wp-caption-text\">DB669 Wireless Doorbell<\/figcaption><\/figure>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"MAU_CHUONG_CUA_DB669_BAN_CHAY_NHAT_HIEN_NAY\"><\/span>DB669 \u2013 ONE OF THE MOST POPULAR WIRELESS DOORBELL MODELS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li aria-level=\"1\">The DB669 uses radio frequency transmission between the chime receiver and the push button. Its operating range is approximately 20\u201370m, using RF433MHz for reliable signal transmission through common obstacles. It is a practical alternative to traditional wired doorbells that require more complicated installation.<\/li>\n<\/ul>\n<div id=\"attachment_5805\" class=\"wp-caption aligncenter\">\n<figure id=\"attachment_16387\" aria-describedby=\"caption-attachment-16387\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16387\" title=\"The wireless signal can pass through common obstacles effectively.\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/1-95.png\" alt=\"T\u00edn hi\u1ec7u truy\u1ec1n c\u00f3 th\u1ec3 xuy\u00ean v\u1eadt c\u1ea3n t\u1ed1t\" width=\"600\" height=\"445\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/1-95.png 900w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/1-95-768x768.png 768w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/1-95-640x640.png 640w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/1-95-400x400.png 400w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-16387\" class=\"wp-caption-text\">The wireless signal can pass through common obstacles effectively.<\/figcaption><\/figure>\n<\/div>\n<ul>\n<li aria-level=\"1\">The chime receiver provides up to 32 selectable ringtones and 4 adjustable volume levels. The wireless push button features IP44 protection against water splashes and dust. It uses a replaceable 12V battery with an operating life of approximately 6 months.<\/li>\n<\/ul>\n<div id=\"attachment_5807\" class=\"wp-caption aligncenter\">\n<figure id=\"attachment_16389\" aria-describedby=\"caption-attachment-16389\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16389\" title=\"The IP44-rated doorbell push button provides good resistance to water splashes.\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/2-86.png\" alt=\"Ch\u1ec9 s\u1ed1 IP44 n\u00fat nh\u1ea5n chu\u00f4ng c\u1eeda ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc t\u1ed1t\" width=\"600\" height=\"632\" \/><figcaption id=\"caption-attachment-16389\" class=\"wp-caption-text\">The IP44-rated doorbell push button provides good resistance to water splashes.<\/figcaption><\/figure>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"THIET_KE_DOT_PHA_TINH_NANG_TICH_HOP_CAO_VA_THEM_DUOC_REMOTE_DIEU_KHIEN_TU_XA\"><\/span>ADVANCED DESIGN WITH HIGH EXPANDABILITY AND REMOTE CONTROL SUPPORT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li aria-level=\"1\">The Kawasan wireless doorbell can be paired with multiple push buttons for different entrances. One chime receiver supports up to 6 push buttons, while one push button can be paired with multiple chime receivers.<\/li>\n<li aria-level=\"1\">It can also be integrated with the D28B PIR sensor and M4 magnetic door sensor for use as a visitor chime and alarm system. These two functions can be combined within one system, helping reduce equipment costs and improve convenience.<\/li>\n<\/ul>\n<div id=\"attachment_4302\" class=\"wp-caption aligncenter\">\n<figure id=\"attachment_16396\" aria-describedby=\"caption-attachment-16396\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16396\" title=\"Highly expandable and compatible with the RM1A remote control.\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/2-87.png\" alt=\"Kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p cao c\u00f3 th\u1ec3 t\u00edch h\u1ee3p remote RM1A \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa\" width=\"1000\" height=\"388\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-16396\" class=\"wp-caption-text\">Highly expandable and compatible with the RM1A remote control.<\/figcaption><\/figure>\n<\/div>\n<ul>\n<li aria-level=\"1\">The DB669 can also be paired with the RM1A remote control for remote chime control. The remote can be used for service calls or emergency assistance applications in hospitals, stores, and similar locations.<\/li>\n<\/ul>\n<p>&gt;&gt;&gt; See more:\u00a0<a href=\"https:\/\/kawasan.vn\/en\/product\/chuong-cua-khong-day-dieu-khien-tu-xa-db669-1rm1a\/\" target=\"_blank\" rel=\"noopener\"><i>Remote-Controlled Wireless Doorbell<\/i><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"SU_KHAC_BIET_CUA_CHUONG_CUA_KHONG_DAY_KAWASAN_SO_VOI_NHUNG_SAN_PHAM_CUNG_LOAI_TREN_THI_TRUONG\"><\/span>DIFFERENCES BETWEEN KAWASAN WIRELESS DOORBELLS AND SIMILAR PRODUCTS ON THE MARKET<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li aria-level=\"1\">Kawasan is an established brand in the\u00a0<a href=\"https:\/\/kawasan.vn\/en\/product-category\/chuong-cua-chuong-bao-khach\/\" target=\"_blank\" rel=\"noopener noreferrer\">doorbell and visitor chime<\/a>sector. Products are supported by a 2-year warranty and are designed for long-term use. Professional sales consultation and technical support are also available.<\/li>\n<li aria-level=\"1\">The wireless transmission range has been improved to approximately 20\u201370m. Sensitive RF technology helps maintain stable signal transmission between the push button and the chime receiver through common obstacles.<\/li>\n<li aria-level=\"1\">The system offers flexible expansion for larger or multi-story homes. One Kawasan chime receiver can be paired with up to 6 push buttons, while one push button can be connected to multiple chime receivers. This helps reduce the need to purchase multiple complete doorbell sets for different areas.<\/li>\n<li aria-level=\"1\">The DB669 battery-powered wireless doorbell can also be paired with a remote control. It can additionally function as a visitor chime when integrated with the M4 magnetic door sensor or D28B PIR sensor.<\/li>\n<li aria-level=\"1\">Product specifications are clearly printed on the packaging for easy reference and operation. Long product service life helps reduce replacement costs over time.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"UNG_DUNG_CHUONG_DIEN_KHONG_DAY_DB669\"><\/span>APPLICATIONS OF THE DB669 WIRELESS DOORBELL<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li aria-level=\"1\">Used as a doorbell<\/li>\n<\/ul>\n<div id=\"attachment_4301\" class=\"wp-caption aligncenter\">\n<figure id=\"attachment_16395\" aria-describedby=\"caption-attachment-16395\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16395\" title=\"The DB669 wireless doorbell is suitable for multi-story houses.\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/huong-db669-1.jpg\" alt=\"Chu\u00f4ng kh\u00f4ng d\u00e2y DB669 th\u00edch h\u1ee3p l\u1eafp \u1edf c\u00e1c nh\u00e0 cao t\u1ea7ng\" width=\"1000\" height=\"438\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/huong-db669-1-768x336.jpg 768w, https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/huong-db669-1-640x280.jpg 640w, https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/huong-db669-1-400x175.jpg 400w, https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/huong-db669-1-1000x438.jpg 1000w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-16395\" class=\"wp-caption-text\">The DB669 wireless doorbell is suitable for multi-story houses.<\/figcaption><\/figure>\n<\/div>\n<ul>\n<li aria-level=\"1\">Used as an emergency alarm call button<\/li>\n<li aria-level=\"1\">Used as an assistance call system for elderly users<\/li>\n<\/ul>\n<div id=\"attachment_5809\" class=\"wp-caption aligncenter\">\n<figure id=\"attachment_16391\" aria-describedby=\"caption-attachment-16391\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16391 size-full\" title=\"Patients only need to press the button so that nurses or doctors can respond promptly.\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/4-37.png\" alt=\"Ng\u01b0\u1eddi b\u1ec7nh ch\u1ec9 c\u1ea7n nh\u1ea5n chu\u00f4ng s\u1ebd c\u00f3 y t\u00e1 v\u00e0 b\u00e1c s\u0129 k\u1ecbp th\u1eddi \u0111\u1ebfn h\u1ed7 tr\u1ee3\" width=\"600\" height=\"455\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/4-37.png 900w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/4-37-768x768.png 768w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/4-37-640x640.png 640w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/4-37-400x400.png 400w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-16391\" class=\"wp-caption-text\">Patients only need to press the button so that nurses or doctors can respond promptly.<\/figcaption><\/figure>\n<\/div>\n<ul>\n<li aria-level=\"1\">Used as a visitor chime or service call system<\/li>\n<\/ul>\n<div id=\"attachment_5813\" class=\"wp-caption aligncenter\">\n<figure id=\"attachment_16394\" aria-describedby=\"caption-attachment-16394\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16394\" title=\"Suitable for calling service staff in restaurants.\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/09\/5-26.png\" alt=\"L\u00e0m chu\u00f4ng b\u00e1o g\u1ecdi nh\u00e2n vi\u00ean ph\u1ee5c v\u1ee5 t\u1ea1i c\u00e1c nh\u00e0 h\u00e0ng\" width=\"600\" height=\"431\" \/><figcaption id=\"caption-attachment-16394\" class=\"wp-caption-text\">Suitable for calling service staff in restaurants.<\/figcaption><\/figure>\n<\/div>\n<ul>\n<li aria-level=\"1\">Used as an internal call chime in homes, offices, hotels, and similar facilities<\/li>\n<\/ul>\n<div id=\"attachment_5808\" class=\"wp-caption aligncenter\">\n<figure id=\"attachment_16390\" aria-describedby=\"caption-attachment-16390\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16390 size-full\" title=\"Convenient for multi-story buildings without the need to call people on each floor manually.\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/chuong-cua-khong-day-DB669-4.png\" alt=\"L\u00e0m chu\u00f4ng b\u00e1o trong nh\u00e0 nhi\u1ec1u t\u1ea7ng ti\u1ec7n l\u1ee3i kh\u00f4ng c\u1ea7n l\u00ean t\u1eebng t\u1ea7ng k\u00eau g\u1ecdi\" width=\"600\" height=\"662\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/chuong-cua-khong-day-DB669-4.png 600w, https:\/\/kawasan.vn\/wp-content\/uploads\/2023\/11\/chuong-cua-khong-day-DB669-4-400x441.png 400w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-16390\" class=\"wp-caption-text\">Convenient for multi-story buildings without the need to call people on each floor manually.<\/figcaption><\/figure>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"LOI_ICH_CUA_CHUONG_CUA_KHONG_DAY_CHONG_NUOC\"><\/span>BENEFITS OF A WATER-RESISTANT WIRELESS DOORBELL<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li aria-level=\"1\">Flexibility: The chime receiver can be easily relocated and installed in different areas of the house, such as living rooms, stairways, corridors, or different floors. The push button can be mounted on a door, wall, gate, or entrance.<\/li>\n<li aria-level=\"1\">Improved aesthetics: No signal wiring is required between the doorbell push button and the chime receiver, helping reduce installation work and maintain a cleaner appearance.<\/li>\n<li aria-level=\"1\">No major renovation required: For homes with stone or granite facades, drilling may be difficult or undesirable because it can damage the surface. A wireless push button is a practical solution because it does not require concealed electrical wiring.<\/li>\n<li aria-level=\"1\">Convenient battery replacement: The wireless push button uses a replaceable battery that typically lasts around 6 months. The chime receiver can be plugged directly into a 220V power outlet.<\/li>\n<li aria-level=\"1\">Expandable system: In large or multi-story homes, a single chime receiver may not be audible everywhere. KAWASAN wireless doorbell push buttons and chime receivers can be expanded and paired with additional units as needed.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>CHU\u00d4NG C\u1eecA KH\u00d4NG D\u00c2Y L\u00c0 G\u00cc? Chu\u00f4ng c\u1eeda kh\u00f4ng d\u00e2y\u00a0l\u00e0 thi\u1ebft b\u1ecb b\u00e1o hi\u1ec7u c\u00f3 kh\u00e1ch ho\u1eb7c c\u00f3 ng\u01b0\u1eddi \u1edf ngo\u00e0i c\u1ea7n v\u00e0o nh\u00e0. Ng\u00e0y nay nh\u00e0 \u1edf \u0111\u01b0\u1ee3c x\u00e2y t\u1ea7ng nhi\u1ec1u v\u00e0 k\u00edn n\u00ean kh\u00f3 c\u00f3 th\u1ec3 k\u00eau b\u1eb1ng mi\u1ec7ng ho\u1eb7c d\u00f9ng chu\u00f4ng c\u1eeda c\u00f3 d\u00e2y. L\u00fac n\u00e0y, s\u1ebd b\u1ecb h\u1ea1n ch\u1ebf n\u1ebfu ng\u01b0\u1eddi [&hellip;]<\/p>","protected":false},"featured_media":16393,"comment_status":"open","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"Chu\u00f4ng C\u1eeda Kh\u00f4ng D\u00e2y","_yoast_wpseo_metadesc":"Chu\u00f4ng c\u1eeda kh\u00f4ng d\u00e2y DB669 d\u00f9ng s\u00f3ng RF433Mhz, truy\u1ec1n t\u00edn hi\u1ec7u gi\u1eefa \u0111\u1ea7u chu\u00f4ng v\u00e0 n\u00fat nh\u1ea5n. 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