{"product_id":"motion-detection-module-mr-hw08kt-for-home-automation","title":"Motion Detection Module MR-HW08KT for Home Automation","description":"\u003ch1\u003eMR-HW08KT PIR Motion Detection and Switching Sensor Module for Home Automation\u003c\/h1\u003e\n\n\u003cp\u003eThe MR-HW08KT is a passive infrared (PIR) motion sensor module designed for home automation and security applications. It detects infrared radiation emitted by moving bodies, triggering a relay output that can switch connected loads like lights or alarms. This compact module integrates sensitivity and time-delay adjustments, making it easy to deploy in a variety of indoor projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V–12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 5 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e120° cone\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eRelay (NO\/NC)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDelay Adjustment\u003c\/td\u003e\n\u003ctd\u003e5–300 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003eAdjustable via potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic hallway or staircase lighting that switches on when motion is detected.\u003c\/li\u003e\n  \u003cli\u003eDIY home security alarm that triggers a siren or notification when a person enters a room.\u003c\/li\u003e\n  \u003cli\u003eSmart pet feeder that dispenses food when your pet approaches the bowl.\u003c\/li\u003e\n  \u003cli\u003eHands-free appliance control for fans or lights in workshops or garages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis module works seamlessly with Arduino, Raspberry Pi, ESP8266, and other 5V microcontrollers via its relay output. It can control AC\/DC loads directly (up to 10A at 250VAC or 30VDC). For logic-level monitoring, the relay side should be isolated if connecting to sensitive boards; consider using an optocoupler if driving inductive loads.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC and GND to a 5V–12V DC supply. The relay output has three terminals: Common (COM), Normally Open (NO), and Normally Closed (NC). For typical switching, wire the load between COM and NO. The detection signal is also accessible on the digital output pin (TTL level) for directly interfacing with microcontrollers. Ensure the power supply can deliver at least 200mA for reliable relay operation.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the MR-HW08KT can be powered from the Arduino's 5V pin, and the digital output can connect directly to any GPIO for motion detection. Use the relay for switching heavier loads.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I adjust the distance it detects motion?\u003c\/summary\u003e\u003cp\u003eThe detection range is affected by sensitivity, which is adjustable via the onboard potentiometer. For maximum range, ensure the sensor is unobstructed and set to highest sensitivity.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the power consumption when idle?\u003c\/summary\u003e\u003cp\u003eThe module typically consumes less than 50mA in standby mode, making it suitable for battery-powered projects when using efficient power management.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445016486253,"sku":"CDN-0702","price":270.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_e8571e41-707b-4ac7-963e-c9159b7868f8.jpg?v=1781512827","url":"https:\/\/compoden.com\/products\/motion-detection-module-mr-hw08kt-for-home-automation","provider":"Compoden","version":"1.0","type":"link"}