Metal Touch Sensor Module KY-036

From the shop's description

Product Description: Touch sensor Metal touch sensor module. The sensor detects human body touch through a metal element. It has a digital and analog interface . A built-in potentiometer allows for adjustment of the detection range. Powered by 3.3 V or 5 V . Touch sensor. Pins of the touch sensor module The device has a 4-pin connector. The output signal can be connected to the digital or analog input of the Arduino module. Example of connection with Arduino Uno module PIN DESCRIPTION A0 Analog output signal. D0 Digital output signal. VCC Supply voltage 3.3V (for digital signal), 5V (for analog signal). GND . System ground. Reed switch module specification Supply voltage: 5 V Connectors: digital and analog Built-in potentiometer PCB Dimensions: 35 x 15 mm