{"id":19902,"date":"2024-07-30T09:21:34","date_gmt":"2024-07-30T02:21:34","guid":{"rendered":"https:\/\/kawasan.vn\/?post_type=product&#038;p=19902"},"modified":"2026-09-16T17:03:46","modified_gmt":"2026-09-16T10:03:46","slug":"cong-tac-cam-ung-su-hien-dien-kw-ps04br","status":"publish","type":"product","link":"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/","title":{"rendered":"Kawasan PS04BR Recessed Ceiling Presence Sensor \u2013 Detects Human Presence Through Breathing and Heartbeat"},"content":{"rendered":"<h2><span class=\"ez-toc-section\" id=\"GIOI_THIEU_CONG_TAC_CAM_UNG_HIEN_DIEN_KW-PS04BR\"><\/span>INTRODUCTION TO THE KW-PS04BR PRESENCE SENSOR SWITCH<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\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#GIOI_THIEU_CONG_TAC_CAM_UNG_HIEN_DIEN_KW-PS04BR\" title=\"INTRODUCTION TO THE KW-PS04BR PRESENCE SENSOR SWITCH\">INTRODUCTION TO THE KW-PS04BR PRESENCE SENSOR SWITCH<\/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\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#CAC_UNG_DUNG_DAC_BIET_CUA_CAM_UNG_HIEN_DIEN\" title=\"SPECIAL APPLICATIONS OF THE PRESENCE SENSOR\">SPECIAL APPLICATIONS OF THE PRESENCE SENSOR<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#Ban_Nang_Cap\" title=\"Upgraded Version\">Upgraded Version<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#UNG_DUNG_THUC_TE_CONG_TAC_KW-PS04BR\" title=\"PRACTICAL APPLICATIONS OF THE KW-PS04BR SWITCH\">PRACTICAL APPLICATIONS OF THE KW-PS04BR SWITCH<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#_Da_dang\" title=\"\u00a0Versatile Applications\">\u00a0Versatile Applications<\/a><\/li><\/ul><\/li><\/ul><\/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\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#SO_SANH_SU_KHACH_NHAU_CUA_CAM_UNG_VI_SONG_VA_CAM_UNG_HIEN_DIEN\" title=\"COMPARISON BETWEEN MICROWAVE SENSORS AND PRESENCE SENSORS\">COMPARISON BETWEEN MICROWAVE SENSORS AND PRESENCE SENSORS<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#Ve_mat_cong_nghe\" title=\"Technology\">Technology<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#Ve_mat_do_nhay\" title=\"Sensitivity\">Sensitivity<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#Ve_khoang_cach_cam_ung\" title=\"Detection Distance\">Detection Distance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#Ve_ung_dung\" title=\"Applications\">Applications<\/a><\/li><\/ul><\/li><\/ul><\/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\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#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-12\" href=\"https:\/\/kawasan.vn\/en\/product\/cong-tac-cam-ung-su-hien-dien-kw-ps04br\/#Cam_ket_tu_Kawasan\" title=\"Kawasan Commitment\">Kawasan Commitment<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>The KW-PS04BR presence sensor switch operates at 24GHz combined with Ultrasonic technology, detecting body signals together with human breathing and heartbeat, or animals with similar frequencies and breathing patterns.\n\nWhen body movement and breathing are detected within the sensing area, the device sends a signal to the switch (relay) to turn on the light. It is not affected by ambient temperatures above 32\u00b0C like infrared sensor switches. The presence sensor can also detect through wooden partitions, glass, thin walls, plasterboard, and more.<\/p>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_19919\" aria-describedby=\"caption-attachment-19919\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-19919\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/Cong-tac-cam-ung.jpeg\" alt=\"\" width=\"600\" height=\"400\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/Cong-tac-cam-ung.jpeg 600w, https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/Cong-tac-cam-ung-400x267.jpeg 400w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-19919\" class=\"wp-caption-text\">SMART SENSOR SWITCH For Your Home<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"CAC_UNG_DUNG_DAC_BIET_CUA_CAM_UNG_HIEN_DIEN\"><\/span>SPECIAL APPLICATIONS OF THE PRESENCE SENSOR<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The KW-PS04BR presence sensor is mainly used with lights, fans, exhaust fans, and air conditioners. It automatically turns devices on and keeps them operating when someone is present, then automatically cuts off the power 30 seconds after no one is detected in the sensing area.\n\nCompared with microwave or infrared sensors, which often require a minimum delay time of more than 5 minutes to maintain relatively stable operation, the light may still turn off if someone remains completely still or falls asleep during those 5 minutes.<\/p>\n<p style=\"text-align: left;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21737 aligncenter\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/KW-PRS04BR-2.jpg\" alt=\"\" width=\"584\" height=\"710\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/KW-PRS04BR-2.jpg 584w, https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/KW-PRS04BR-2-400x486.jpg 400w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/>With the PS04BR presence sensor\u2019s fixed detection radius of within 3m, the device operates more effectively and stably, helping avoid cases where lights randomly turn ON\/OFF due to body movement being detected through obstacles such as room doors or partitions between rooms, causing uncontrolled switching. An exception is public restrooms with partitions, where this feature is very effective.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Ban_Nang_Cap\"><\/span>Upgraded Version<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Kh\u00f4ng gi\u1ed1ng c\u00e1c c\u00f4ng t\u1eafc c\u1ea3m \u1ee9ng vi s\u00f3ng d\u00f9ng c\u1ea3m bi\u1ebfn Rada. C\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn t\u00edn hi\u1ec7u ng\u01b0\u1eddi di chuy\u1ec3n r\u1ed9ng (t\u1eeb 3m \u0111\u1ebfn 10m). Khi ng\u01b0\u1eddi d\u00f9ng ch\u1ec9nh \u0111\u1ed9 xa qu\u00e1 cao, c\u1ea3m bi\u1ebfn vi s\u00f3ng s\u1ebd l\u00e0m vi\u1ec7c kh\u00f4ng \u1ed5n \u0111\u1ecbnh n\u1ebfu l\u1eafp trong c\u00e1c ph\u00f2ng h\u1ecdp, ph\u00f2ng ng\u1ee7, ph\u00f2ng ch\u1edd, showroom&#8230; C\u00f3 di\u1ec7n t\u00edch nh\u1ecf (&lt;30m2) v\u00e0 c\u00f3 c\u00e1c v\u00e1ch ng\u0103n b\u1eb1ng k\u00ednh, th\u1ea1ch cao, g\u1ed7\u2026<\/p>\n<p>&nbsp;<\/p>\n<p>C\u1ea3m bi\u1ebfn hi\u1ec7n di\u1ec7n n\u00e0y c\u00f3 ch\u1ee9c n\u0103ng \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 LUX (s\u00e1ng\/t\u1ed1i). Khi v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t c\u00f3 \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi chi\u1ebfu s\u00e1ng v\u00e0o th\u00ec PS04BR s\u1ebd nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1ed9 s\u00e1ng \u0111\u00e3 \u0111\u1ea1t m\u1ee9c c\u00e0i \u0111\u1eb7t (n\u1ebfu ch\u1ec9nh t\u1ea1i v\u1ecb tr\u00ed 60lux). C\u1ea3m \u1ee9ng hi\u1ec7n di\u1ec7n s\u1ebd kh\u00f4ng cho \u0111\u00e8n b\u1eadt. Khi n\u00e0o tr\u1eddi chuy\u1ec3n m\u01b0a ho\u1eb7c m\u1eb7t tr\u1eddi l\u1eb7n, \u00e1nh s\u00e1ch kh\u00f4ng \u0111\u1ee7 (&lt;60lux) th\u00ec c\u1ea3m bi\u1ebfn m\u1edbi b\u1eadt c\u00f4ng t\u1eafc cho \u0111\u00e8n s\u00e1ng l\u00ean.<\/p>\n<p>KW-PS04BR c\u00f3 \u0111\u1eb7c t\u00ednh ph\u00e1t hi\u1ec7n s\u1ef1 hi\u1ec7n di\u1ec7n li\u00ean t\u1ee5c. Th\u1eddi gian m\u1edf \u0111\u00e8n \u0111\u01b0\u1ee3c di tr\u00ec trong kho\u1ea3ng th\u1eddi gian c\u00e0i \u0111\u1eb7t (t\u1ed1i thi\u1ec3u 30 gi\u00e2y, t\u1ed1i \u0111a 10 ph\u00fat). Khi kh\u00f4ng c\u00f2n s\u1ef1 di chuy\u1ec3n ho\u1eb7c s\u1ef1 hi\u1ec7n di\u1ec7n n\u00e0o c\u1ee7a c\u01a1 th\u1ec3 ng\u01b0\u1eddi trong v\u00f9ng qu\u00e9t c\u1ee7a s\u00f3ng si\u00eau \u00e2m (s\u00f3ng Ultrasonic) th\u00ec thi\u1ebft b\u1ecb s\u1ebd nh\u1ea3 c\u00f4ng t\u1eafc (nh\u1ea3 Relay) v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ea7u ra s\u1ebd t\u1eaft.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"UNG_DUNG_THUC_TE_CONG_TAC_KW-PS04BR\"><\/span>PRACTICAL APPLICATIONS OF THE KW-PS04BR SWITCH<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u1ee8ng d\u1ee5ng \u0111\u1eb7c bi\u1ec7t c\u1ee7a c\u00f4ng t\u1eafc c\u1ea3m \u1ee9ng hi\u1ec7n di\u1ec7n n\u00e0y l\u00e0 c\u00f3 th\u1ec3 d\u00f9ng cho m\u00e1y \u0111i\u1ec1u h\u00f2a trong ph\u00f2ng ng\u1ee7, ph\u00f2ng ch\u1edd\u2026 Khi c\u00f3 ng\u01b0\u1eddi trong ph\u00f2ng th\u00ec m\u00e1y \u0111i\u1ec1u h\u00f2a lu\u00f4n duy tr\u00ec ngu\u1ed3n \u0111i\u1ec7n c\u1ea5p cho m\u00e1y \u0111i\u1ec1u h\u00f2a. Ngay c\u1ea3 khi ng\u00f4i im b\u1ea5t \u0111\u1ed9ng ho\u1eb7c n\u1eb1m ng\u1ee7 th\u00ec m\u00e1y \u0111i\u1ec1u h\u00f2a v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. Nh\u01b0ng khi kh\u00f4ng c\u00f2n ai trong ph\u00f2ng th\u00ec s\u1ebd t\u1ef1 t\u1eaft ngu\u1ed3n m\u00e1y \u0111i\u1ec1u h\u00f2a. Gi\u00fap ti\u1ebft ki\u1ec7m t\u1ed1i \u0111a chi ph\u00ed \u0111i\u1ec7n n\u0103ng v\u00e0 t\u0103ng tu\u1ed5i th\u1ecd cho thi\u1ebft b\u1ecb, v\u00ec kh\u00f4ng ph\u1ea3i duy tr\u00ec ngu\u1ed3n \u0111i\u1ec7n c\u1ea5p cho thi\u1ebft b\u1ecb.<\/p>\n<p>Ch\u00fa \u00fd n\u1ebfu l\u1eafp cho m\u00e1y \u0111i\u1ec1u h\u00f2a inverter c\u00f3 c\u00f4ng su\u1ea5t tr\u00ean 750w th\u00ec c\u1ea7n l\u1eafp th\u00eam kh\u1edfi \u0111\u1ed9ng lo\u1ea1i 1 pha (thi\u1ebft k\u1ebf m\u1ecfng b\u1eb1ng CB 1 t\u00e9p c\u1ee7a Kawasan KWC-25A, c\u00f3 th\u1ec3 \u0111\u1eb7t \u00e2m trong m\u00e1y \u0111i\u1ec1u h\u00f2a). \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u1ea3m \u1ee9ng hi\u1ec7n di\u1ec7n.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21761 aligncenter\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/minh-hoa-PS04BR.jpg\" alt=\"\" width=\"802\" height=\"500\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/minh-hoa-PS04BR.jpg 802w, https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/minh-hoa-PS04BR-768x479.jpg 768w, https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/minh-hoa-PS04BR-640x399.jpg 640w, https:\/\/kawasan.vn\/wp-content\/uploads\/2024\/07\/minh-hoa-PS04BR-400x249.jpg 400w\" sizes=\"auto, (max-width: 802px) 100vw, 802px\" \/><\/p>\n<h4><span class=\"ez-toc-section\" id=\"_Da_dang\"><\/span><span style=\"font-size: 18px;\">\u00a0Versatile Applications<\/span><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>Presence Sensor:<\/strong> Can be used in patient rooms and children\u2019s bedrooms, where users often forget to turn off the lights when leaving. It can also be installed for air conditioners in meeting rooms and bedrooms so that when everyone leaves the room, the power supply automatically turns off and the air conditioner shuts down. When someone is sleeping in the bedroom, the air conditioner continues operating normally.<\/p>\n<p><strong>Microwave Sensor:<\/strong> : Not suitable for the situations above because when a person is sleeping or sitting still without movement, the light or air conditioner may turn off. Even if the microwave sensor\u2019s time delay is set to the maximum of 30 minutes (if body movement is detected within those 30 minutes, the sensor will automatically extend operation for another 30 minutes), the light or air conditioner may still turn off if the person remains completely still for 30 consecutive minutes.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SO_SANH_SU_KHACH_NHAU_CUA_CAM_UNG_VI_SONG_VA_CAM_UNG_HIEN_DIEN\"><\/span>COMPARISON BETWEEN MICROWAVE SENSORS AND PRESENCE SENSORS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>\n<h4><span class=\"ez-toc-section\" id=\"Ve_mat_cong_nghe\"><\/span>Technology<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<\/li>\n<\/ol>\n<p><strong>Microwave Sensor<\/strong>. Uses 5.8GHz radar sensing technology.<\/p>\n<p><strong>Kawasan Presence Sensor:<\/strong> Uses Ultrasonic technology, capable of detecting human heartbeat and breathing.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-21763 aligncenter\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/1-92.png\" alt=\"\" width=\"800\" height=\"833\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<ol start=\"2\">\n<li>\n<h4><span class=\"ez-toc-section\" id=\"Ve_mat_do_nhay\"><\/span>Sensitivity<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<\/li>\n<\/ol>\n<p><strong>Microwave Sensor:<\/strong> Requires a minimum level of movement through actions such as nodding, shaking the head, or moving the entire arm or leg.<\/p>\n<p><strong>Kawasan Presence Sensor:<\/strong>. Detects the presence of the human body through breathing and heartbeat activity.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-21764\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/2-97.png\" alt=\"\" width=\"800\" height=\"667\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/2-97.png 900w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/2-97-768x768.png 768w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/2-97-640x640.png 640w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/2-97-400x400.png 400w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<ol start=\"3\">\n<li>\n<h4><span class=\"ez-toc-section\" id=\"Ve_khoang_cach_cam_ung\"><\/span>Detection Distance<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<\/li>\n<\/ol>\n<p><strong>Microwave Sensor:<\/strong> Has a detection radius of 2\u20136m, adjustable using the control knob on the device.<\/p>\n<p><strong>Kawasan Presence Sensor:<\/strong> Has a maximum detection radius of only 2m and cannot be adjusted. Because of its high sensitivity, a longer detection range may cause unstable operation. Ultrasonic sensing can pass through glass, wood, plastic, and thin walls, making it easy to continuously detect surrounding movement signals and keep the light permanently ON.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-21765\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/3-55.png\" alt=\"\" width=\"800\" height=\"650\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/3-55.png 900w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/3-55-768x768.png 768w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/3-55-640x640.png 640w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/3-55-400x400.png 400w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<ol start=\"4\">\n<li>\n<h4><span class=\"ez-toc-section\" id=\"Ve_ung_dung\"><\/span>Applications<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<\/li>\n<\/ol>\n<p><strong>Presence Sensor:<\/strong>Can be used in patient rooms and children\u2019s bedrooms, where users often forget to turn off the lights when leaving, and for controlling air conditioners in meeting rooms and bedrooms. When everyone leaves the room, the power supply automatically turns off and the air conditioner shuts down. When someone is sleeping in the bedroom, the air conditioner continues operating normally.<\/p>\n<p><strong>Microwave Sensor:<\/strong> Not suitable for these situations. When a person is sleeping or sitting still without movement, the light or air conditioner may turn off. Even if the microwave sensor\u2019s time delay is set to the maximum of 30 minutes (if body movement is detected within those 30 minutes, the sensor will automatically extend operation for another 30 minutes), the light or air conditioner may still turn off if the person remains completely still for 30 consecutive minutes.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-21766\" src=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/4-35.png\" alt=\"\" width=\"800\" height=\"674\" srcset=\"https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/4-35.png 900w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/4-35-768x768.png 768w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/4-35-640x640.png 640w, https:\/\/kawasan.vn\/wp-content\/uploads\/2026\/08\/4-35-400x400.png 400w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><strong>Products <a href=\"https:\/\/kawasan.vn\/en\/product-category\/cong-tac-cam-ung\/\">Similar Products<\/a>: <a href=\"https:\/\/kawasan.com.vn\/san-pham.html\/cong-tac-cam-ung.html\">View Here<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"TAI_SAO_NEN_CHON_KAWASAN\"><\/span>WHY CHOOSE KAWASAN?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>A Leading Vietnamese Brand <\/strong>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><strong>High durability with selected components<\/strong>\u2013 Stable operation even in harsh weather conditions<\/li>\n<li><strong>Superior Warranty Policy<\/strong>\u2013 Repair support is available even after the warranty period if the product can still be restored<\/li>\n<li><strong>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.<\/strong><\/li>\n<li><strong>24\/7 Support Service<\/strong>, with a nationwide dealer network<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cam_ket_tu_Kawasan\"><\/span><strong>Kawasan Commitment<\/strong><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.<br \/>\nAll products are covered by warranty\u00a0<strong>free of charge for 24 months<\/strong>, with 1-for-1 replacement within 30 days for technical defects. 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><strong>Customers can purchase products at authorized dealers within <\/strong><a href=\"https:\/\/kawasan.vn\/en\/he-thong-phan-phoi\/\"><strong>NATIONWIDE DISTRIBUTION SYSTEM<\/strong><\/a><strong> in provinces and cities nationwide, or place orders directly on the website.<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>Thank you for trusting Kawasan products!<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>Toll-Free Consulting Hotline:\u00a0<\/strong><strong>1800 0058<\/strong><\/p>\n<p style=\"text-align: center;\" align=\"center\"><strong>Website:\u00a0\u00a0<\/strong><a href=\"https:\/\/kawasan.vn\/en\/\"><strong>www.kawasan.vn<\/strong><\/a><\/p>\n<p style=\"text-align: center;\" align=\"center\"><strong>Website:\u00a0\u00a0<\/strong><a href=\"https:\/\/kawaled.com.vn\/\"><strong>www.kawaled.com.vn<\/strong><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>GI\u1edaI THI\u1ec6U C\u00d4NG T\u1eaeC C\u1ea2M \u1ee8NG HI\u1ec6N DI\u1ec6N KW-PS04BR C\u00f4ng t\u1eafc c\u1ea3m \u1ee9ng hi\u1ec7n di\u1ec7n KW-PS04BR. 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