{"product_id":"bm612-digital-pir-sensor-adjustable-motion-detection-module","title":"BM612 Digital PIR Sensor – Adjustable Motion Detection Module","description":"\u003ch1\u003eBM612 Digital PIR Motion Sensor – 5V, Adjustable Delay \u0026amp; Sensitivity\u003c\/h1\u003e\n\n\u003cp\u003eThe BM612 is a digital passive infrared (PIR) sensor module that detects motion by sensing changes in infrared radiation from moving objects. It outputs a clean digital high signal when motion is detected, making it ideal for microcontroller-based security systems, automatic lighting, and IoT projects. With onboard potentiometers for delay and sensitivity adjustment, you can fine-tune its behaviour to avoid false triggers.\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 DC (3.3V logic compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 7 metres\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 120° cone\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eDigital high (3.3V) when motion detected\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDelay Adjustment\u003c\/td\u003e\n\u003ctd\u003e5s to 300s (rotary pot)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensitivity Adjustment\u003c\/td\u003e\n\u003ctd\u003eRotary potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e32mm x 24mm x 20mm\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 room light controller that switches on when you enter\u003c\/li\u003e\n  \u003cli\u003eLow-cost burglar alarm with Arduino and a buzzer\u003c\/li\u003e\n  \u003cli\u003eMotion-activated wildlife camera using an ESP32-CAM\u003c\/li\u003e\n  \u003cli\u003eContactless doorbell or entrance alert system\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe BM612 works with any microcontroller that can read a digital input, including Arduino Uno, Nano, ESP8266, ESP32, and Raspberry Pi Pico. Its output is 3.3V logic, so it connects safely to 3.3V boards without level shifting. For 5V Arduino boards, the 3.3V output still reads as a valid high. It pairs well with relay modules for switching mains-powered devices.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 5V, GND to GND, and OUT to any digital pin on your microcontroller. No external pull-up resistor is needed. If driving a relay directly, place a 10KΩ resistor between OUT and the relay base to limit current. Avoid placing the sensor near heat sources or windows to minimize false triggers.\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 Raspberry Pi?\u003c\/summary\u003e\u003cp\u003eYes, the BM612 output is 3.3V logic and can connect directly to a Raspberry Pi GPIO pin. Use a simple Python script to monitor the pin state and trigger actions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I adjust sensitivity and delay?\u003c\/summary\u003e\u003cp\u003eTurn the two orange potentiometers on the board using a small screwdriver. One adjusts sensitivity (clockwise for more sensitive), the other sets the time the output stays high after motion stops (5 to 300 seconds).\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect motion through glass?\u003c\/summary\u003e\u003cp\u003eNo, PIR sensors cannot detect infrared changes through glass because glass blocks most infrared wavelengths. Place it in an open area for reliable detection.\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":53445008032109,"sku":"CDN-0663","price":130.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_23d12c91-d30a-4bbd-ae59-9c335303d638.jpg?v=1781512783","url":"https:\/\/compoden.com\/products\/bm612-digital-pir-sensor-adjustable-motion-detection-module","provider":"Compoden","version":"1.0","type":"link"}