{"product_id":"ra24a18-24ghz-presence-sensor-module-human-motion-presence-sensor-module-mmwave-radar-technology","title":"RA24A18 24GHz Presence Sensor Module – Human Motion Presence Sensor Module mmWave Radar Technology","description":"\u003cp\u003e\u003cstrong\u003eRA24A18 24GHz Presence Sensor Module – Human Motion Presence Sensor Module mmWave Radar Technology:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2 data-start=\"251\" data-end=\"282\"\u003e📝 \u003cstrong data-start=\"257\" data-end=\"280\"\u003eProduct Description\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"435\" data-end=\"766\"\u003eThe \u003cstrong data-start=\"439\" data-end=\"469\"\u003eRA24A18 24GHz radar module\u003c\/strong\u003e is a compact presence sensor designed to detect whether people are in a room, moving around, or even staying still. Using advanced \u003cstrong data-start=\"601\" data-end=\"632\"\u003e24GHz FMCW radar technology\u003c\/strong\u003e, it can pick up everything from obvious movements like walking or turning, to small gestures like using a phone or flipping a book.\u003c\/p\u003e\n\u003cp data-start=\"768\" data-end=\"1106\"\u003eUnlike traditional motion sensors, this module works even when people are sitting quietly, making it ideal for \u003cstrong data-start=\"879\" data-end=\"956\"\u003esmart lighting, home automation, offices, and hotel energy-saving systems\u003c\/strong\u003e. It is also reliable in different weather and lighting conditions, and can sense through materials like \u003cstrong data-start=\"1061\" data-end=\"1103\"\u003eglass, plastic, thin wood, or clothing\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1108\" data-end=\"1245\"\u003eIts small size, low power use, and accurate detection make it easy to integrate into products where smart presence detection is needed.\u003c\/p\u003e\n\u003ch3 data-start=\"1252\" data-end=\"1273\"\u003e🔧 Key Features\u003c\/h3\u003e\n\u003cul data-start=\"1274\" data-end=\"1621\"\u003e\n\u003cli data-start=\"1274\" data-end=\"1340\"\u003e\n\u003cp data-start=\"1276\" data-end=\"1340\"\u003eDetects human \u003cstrong data-start=\"1290\" data-end=\"1338\"\u003emotion, micro-movements, and static presence\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1341\" data-end=\"1402\"\u003e\n\u003cp data-start=\"1343\" data-end=\"1402\"\u003eWorks reliably through \u003cstrong data-start=\"1366\" data-end=\"1400\"\u003eglass, plastic, and thin walls\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1403\" data-end=\"1473\"\u003e\n\u003cp data-start=\"1405\" data-end=\"1473\"\u003eStable operation, not affected by light, temperature, snow, or fog\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1474\" data-end=\"1534\"\u003e\n\u003cp data-start=\"1476\" data-end=\"1534\"\u003eStrong interference suppression for fewer false triggers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1535\" data-end=\"1586\"\u003e\n\u003cp data-start=\"1537\" data-end=\"1586\"\u003eCompact module, supports \u003cstrong data-start=\"1562\" data-end=\"1584\"\u003eUART communication\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1587\" data-end=\"1621\"\u003e\n\u003cp data-start=\"1589\" data-end=\"1621\"\u003eCan be ceiling or wall mounted\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e📋 \u003cstrong data-start=\"1534\" data-end=\"1562\"\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e24 – 24.25 GHz (ISM band)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range (Wall Mount)\u003c\/td\u003e\n\u003ctd\u003eMotion: up to 6m \/ Presence: up to 6m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range (Ceiling Mount)\u003c\/td\u003e\n\u003ctd\u003eMotion: up to 4m \/ Presence: up to 4m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeam Angle\u003c\/td\u003e\n\u003ctd\u003e100° × 80°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefresh Rate\u003c\/td\u003e\n\u003ctd\u003e150 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V – 8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e~20mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelay Time\u003c\/td\u003e\n\u003ctd\u003e2s – 3600s (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Sensitivity\u003c\/td\u003e\n\u003ctd\u003e10 Lux (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-25°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5% – 95% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Level\u003c\/td\u003e\n\u003ctd\u003e3.3V (High), 0V (Low)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Ceiling Height\u003c\/td\u003e\n\u003ctd\u003e≤ 4.5m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Size\u003c\/td\u003e\n\u003ctd\u003eCompact PCB (see datasheet for exact mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e🌍 \u003cstrong data-start=\"2356\" data-end=\"2372\"\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2373\" data-end=\"2581\"\u003e\n\u003cli data-start=\"2373\" data-end=\"2417\"\u003e\n\u003cp data-start=\"2375\" data-end=\"2417\"\u003e🏠 Smart home lighting \u0026amp; HVAC automation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2418\" data-end=\"2456\"\u003e\n\u003cp data-start=\"2420\" data-end=\"2456\"\u003e🔒 Security \u0026amp; surveillance systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2457\" data-end=\"2495\"\u003e\n\u003cp data-start=\"2459\" data-end=\"2495\"\u003e🏭 Industrial occupancy monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2496\" data-end=\"2541\"\u003e\n\u003cp data-start=\"2498\" data-end=\"2541\"\u003e🚗 Automotive in-cabin detection \u0026amp; safety\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2542\" data-end=\"2581\"\u003e\n\u003cp data-start=\"2544\" data-end=\"2581\"\u003e📡 IoT and AI-based sensing devices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"126\" data-end=\"143\"\u003eHow it works:\u003c\/h3\u003e\n\u003cul data-start=\"144\" data-end=\"536\"\u003e\n\u003cli data-start=\"144\" data-end=\"276\"\u003e\n\u003cp data-start=\"146\" data-end=\"276\"\u003eUnlike PIR (infrared) sensors, which only detect \u003cstrong data-start=\"195\" data-end=\"205\"\u003emotion\u003c\/strong\u003e, this mmWave radar sensor uses \u003cstrong data-start=\"237\" data-end=\"273\"\u003eDoppler + micro-motion detection\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"277\" data-end=\"436\"\u003e\n\u003cp data-start=\"279\" data-end=\"436\"\u003eIt senses \u003cstrong data-start=\"289\" data-end=\"346\"\u003ebreathing, small body vibrations, or subtle movements\u003c\/strong\u003e that happen naturally, so it knows if someone is present even when not actively moving.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"437\" data-end=\"536\"\u003e\n\u003cp data-start=\"439\" data-end=\"536\"\u003eThis makes it useful for \u003cstrong data-start=\"464\" data-end=\"487\"\u003eoccupancy detection\u003c\/strong\u003e in offices, smart homes, and lighting systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"538\" data-end=\"548\"\u003e⚠️ Note:\u003c\/p\u003e\n\u003cul data-start=\"549\" data-end=\"825\"\u003e\n\u003cli data-start=\"549\" data-end=\"636\"\u003e\n\u003cp data-start=\"551\" data-end=\"636\"\u003eDetection range and accuracy depend on installation (angle, distance, environment).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"637\" data-end=\"825\"\u003e\n\u003cp data-start=\"639\" data-end=\"825\"\u003eIf a person sits completely still \u003cstrong data-start=\"673\" data-end=\"699\"\u003eand holds their breath\u003c\/strong\u003e, the detection may become weaker, but in normal situations (breathing, slight posture adjustments) it will detect presence.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"2272\" data-end=\"2298\"\u003e📦 \u003cstrong data-start=\"2278\" data-end=\"2298\"\u003ePackage Includes\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cul data-start=\"2299\" data-end=\"2343\"\u003e\n\u003cli data-start=\"2299\" data-end=\"2343\"\u003e\n\u003cp data-start=\"2301\" data-end=\"2343\"\u003e1 × RA24A18 24GHz Presence Sensor Module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eHorizontal installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"mmWave Radar - Human Presence Detection (9m)-Horizontal installation\" src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0395\/Horizontal%20installation_0x0.png.webp\" data-original=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0395\/Horizontal%20installation_0x0.png.webp\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eTop installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"mmWave Radar - Human Presence Detection (9m)-Top installation\" src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0395\/Top%20installation_0x0.png.webp\" data-original=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0395\/Top%20installation_0x0.png.webp\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Digilog Electronics","offers":[{"title":"Default Title","offer_id":43962614349889,"sku":"b767","price":600.0,"currency_code":"PKR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/2805\/1777\/files\/RA24A1824GHzPresenceSensorModule_HumanMotionPresenceSensorModulemmWaveRadarTechnology_1.png?v=1779581314","url":"https:\/\/stem.pk\/products\/ra24a18-24ghz-presence-sensor-module-human-motion-presence-sensor-module-mmwave-radar-technology","provider":"stem.pk","version":"1.0","type":"link"}