{"product_id":"mr-hw08kt-motion-detection-sensor-module-for-home-automation-switching","title":"MR-HW08KT Motion Detection Sensor Module for Home Automation Switching","description":"\u003ch1\u003eMR-HW08KT Motion Detection \u0026amp; Switching Sensor Module for Home Automation\u003c\/h1\u003e\u003cp\u003eThe MR-HW08KT is a passive infrared (PIR) motion sensor module designed for automatic switching in home automation and security systems. It detects human movement within a 7-meter range and outputs a TTL-level signal to trigger relays, microcontrollers, or other loads. With adjustable sensitivity and delay time, it adapts to various indoor detection scenarios.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\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 7 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003e120° conical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003eHigh (3.3V) when motion detected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustable Delay\u003c\/td\u003e\n\u003ctd\u003e~5 seconds to 5 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustable Sensitivity\u003c\/td\u003e\n\u003ctd\u003eVia on-board potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAutomatic room light controller that turns lights on when someone enters\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-esp32-gsm-sms-alert-system\"\u003eSecurity alarm system with buzzer and SMS alert via GSM module\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eSmart corridor or staircase lighting for energy saving\u003c\/li\u003e\n\u003cli\u003eMotion-activated camera or recording trigger\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThe module works with any 5V or 3.3V microcontroller that has a digital input, including Arduino Uno, Nano, ESP8266, ESP32, and Raspberry Pi (with level shifting for 5V logic). The output is active high and can directly drive an LED or interface with a relay module (use a transistor driver if the relay coil current exceeds 20mA). Common pairings include 5V single-channel relay modules for appliance control.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to a 5V–12V DC supply, GND to common ground, and OUT to a digital GPIO pin. No external pull-up is needed; the output is push-pull. The on-board regulator provides a stable 3.3V logic output—compatible with both 3.3V and 5V inputs. Avoid running signal wires parallel to high-current cables to minimise false triggers.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\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\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, connect VCC to 5V, GND to GND, and OUT to any digital pin. The output is 3.3V but Arduino 5V inputs recognise it as HIGH.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I adjust the detection delay and sensitivity?\u003c\/summary\u003e\u003cp\u003eUse the potentiometers on the module. One adjusts the time the output stays high after motion (clockwise increases delay), the other adjusts the PIR sensitivity to movement.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan this module directly switch a 230V light?\u003c\/summary\u003e\u003cp\u003eNo, it outputs a low-current signal. You'll need a relay module or SSR rated for mains voltage to switch appliances safely.\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":53444958454125,"sku":"CDN-0326","price":270.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_3fd03e4e-96e2-44d4-8637-b1059f9b676c.jpg?v=1781512450","url":"https:\/\/compoden.com\/products\/mr-hw08kt-motion-detection-sensor-module-for-home-automation-switching","provider":"Compoden","version":"1.0","type":"link"}