The RCWL-0516 is a doppler radar microwave motion sensor module which can act as an alternative to a PIR motion sensor. Instead of sensing changes in infra red 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
Technical Specification:
- Operating Voltage: 4-28V
- Operating Current: 2.8mA (typical); 3mA (max)
- Operating Frequency: ~ 3.2GHz
- Detection Distance: 5-9m
- Transmission Power: 20mW (typical); 30mW (max.)
- Sensor Output Voltage: 3.2-3.4V
- Capacitance Current of Sensor Output: 100mA
- Triggering Path: Repetitive Triggering
- Output Signal Low Level: 0V
- Output Signal High Level: 3.3V
- Working Temperature: -20 ~ 80C
Adjustment Part Introduction:
- C-TM: Adjust repeat trigger time,default trigger time is 2s;increasing capacitor's capacity will make repeat trigger time longer;and actual counting trigger time can operate as below: Stick capacitor on C-TM,test 9196 3-pin frequency F,repeat trigger time T=(1/f)*32768
- R-GN: Detection distance adjustment;connect with resistor and detection distance will become shorter;if not connect,detection distance is 7m;if connect with 1M ohm resistor,detection distance is 5m
- R-CDS: Internal VCC parallel connect with internal 1M ohm resistor to CDS pin (that is 196 9-pin) by R-CDS ,CDS connects with photoresistor,you can close detection function at night.
Pinout:
- 3V3: 3V3 power output
- GND: ground
- OUT: control output;when detect moving objects,it will output high level
- VIN: input voltage,4-28V
- CDS: enable control chip,lower than 0.7V,OUT will output low level all the time
Note:
- No metal should be placed just in front of the induction side
- Front / back side must leave more than 1 cm clearance
Technical Documents:
EN
