{"product_id":"rcwl-0516-microwave-radar-sensor-motion-detection-module","title":"RCWL-0516 Microwave Radar Sensor – Motion Detection Module","description":"\u003ch1\u003eRCWL-0516 Microwave Radar Sensor – 5V Motion Detection Through Walls\u003c\/h1\u003e\n\n\u003cp\u003eThe RCWL-0516 is a Doppler radar motion sensor module that uses microwave signals to detect movement through non-metallic barriers like drywall, wood, and glass. Unlike passive infrared (PIR) sensors, it does not require line-of-sight and can sense motion even behind walls or doors. Ideal for hidden sensor installations, automatic lighting, and security systems.\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\u003e3.3–5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 7 meters (adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e3.3 V TTL – HIGH on motion (jumper configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMicrowave Frequency\u003c\/td\u003e\n\u003ctd\u003e3.18 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e~20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e36 × 17 mm\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\u003eMotion-activated room lighting that works even with hidden sensor placement\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/arduino-gsm-sms-kit-build-an-iot-button-that-sends-messages\"\u003eDIY security alarm with SMS alerts using GSM module and Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eAutomatic door or gate opener triggered by approaching people or vehicles\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/esp8266-nodemcu-home-automation-project-kit\"\u003eSmart home occupancy sensor for presence-based automation with NodeMCU\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks with any 3.3 V or 5 V microcontroller including Arduino Uno\/Nano, ESP8266, ESP32, and Raspberry Pi. The 3.3 V logic output is safe for Raspberry Pi GPIO directly, and is reliably read as HIGH by 5 V Arduino inputs. No external level shifting required for most setups.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3–5 V (use 5 V for best detection range), GND to common ground, and OUT to a digital input pin. Keep the antenna area away from large metal objects and WiFi routers to avoid interference. For noisy power supplies, add a 100 μF electrolytic capacitor across VCC and GND.\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 Uno?\u003c\/summary\u003e\u003cp\u003eYes, the RCWL-0516's 3.3 V output is correctly interpreted as a logic HIGH by Arduino Uno's 5 V inputs. Simply wire VCC to 5 V, GND to GND, and OUT to any digital pin.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it detect motion through walls?\u003c\/summary\u003e\u003cp\u003eMicrowave radar penetrates typical interior walls, wood, and glass, but not solid metal or thick concrete. The effective range reduces when objects are behind barriers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the maximum detection range?\u003c\/summary\u003e\u003cp\u003eThe onboard potentiometer adjusts sensitivity for up to approximately 7 meters. Larger targets (e.g., people vs. small animals) are detected farther, and obstacles can shorten the range.\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":53444959240557,"sku":"CDN-0338","price":35.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_e057f6f1-14d4-4caa-a22c-cc47293bdfbe.jpg?v=1781595479","url":"https:\/\/compoden.com\/products\/rcwl-0516-microwave-radar-sensor-motion-detection-module","provider":"Compoden","version":"1.0","type":"link"}