5PCS RCWL-0516 Motion Detection Sensor, Microwave Radar Sensor Switch Module for Arduino ESP8266 Nodemcu Wemos for Animals Detector, Detection Distance 5-7m, Better Than HC-SR501

The distance can be adjusted via R-GN

• C-T.M: Adjust repeat trigger time (default 2 s). Adding a capacitor will give a longer repeat trigger time.
• R-GN: Detection distance is adjustable (default 7 m). Adding a resistor the detection distance will become shorter. If connected with a 1-MΩ resistor, detection range is about 5 m.
• R-CDS: By adding a resistor (in parallel with the internal 1-MΩ resistor), user can change the light detection threshold as per individual requirement.

This is applicable only when a light sensor is soldered in its pads (CDS) on the front of the circuit board.

A 47–100K resistor works fine with standard 5-mm LDRs

• you can check this page https(:)//www(dot)electroschematics(dot)com/get-started-microwave-radar-motion-sensor/

How to Get Started with a RCWL-0516 Microwave Radar Motion Sensor?

• CDS = No connection
• VIN = 5vdc (+) (9v battery also Ok)
• OUT = 3.3vdc signal out when triggered
• GND = 0vdc (-)
• 3V3 = No connection (in most applications)

RCWL-0516 and Nodemcu connection

The wires beteen the RCWL-0516 and the bread board should be 12 to 18 inches (30 to 45 cm) long.

Microwave Radar Sensor RCWL-0516 Switch Module Detector 5-7M

RCWL-0516 microwave induction module circuit diagram

RCWL-0516 and Ar duino UNO connection