Microwave Radar Sensor RCWL-0516

CWL-0516 Microwave Radar Sensor Description: This module has been designed as an alternative to the PIR motion detectors commonly used in burglar alarms. Instead of sensing changes in infrared radio emitted by a moving person this sensor uses a microwave Doppler radar to detect moving objects. It has a sensitivity range of ~7 meters. When triggered its trigger output pin will switch from (LOW) 0V to high (3.3V) for ~ 2 to 3 seconds before returning to its idle LOW state. Features: Product code: HCSENS0040 Supply Voltage: 5V dc Supply Current: >3mA (2.8mA typical) Operating frequency: ~3.2GHz Transmit power: 20mW (typical) / 30mW (max) Size: 36mm x 17mm Notes: Component side should face detection area for maximum sensitivity Do not place metal objects within 1cm of antenna Trigger out – HIGH (3.3V) motion / LOW no motion 3.3V output is for reference only – do not use to power other devices. Device operates at ~3.2GHz/20 – 30mW. In some countries it may be illegal to operate this device. Pinout: 3V3……….Regulated output (reference only) GND………Ground / 0V supply input OUT……….Trigger: HIGH (3.3V) motion detected / LOW (0V) idle VIN………. 5V-12V supply input CDS……….Sensor disable input (pull low to disable)