Function: Capacitive touch sensor that acts as a digital switch when touched.

Sensor IC: Built around the TTP223B capacitive touch controller chip.

Operating Voltage: 2.0V to 5.5V DC – compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers.

Output: Digital signal – HIGH when touched, LOW when not touched (can be reversed by soldering jumper).

Touch Sensitivity: High sensitivity – detects touch through thin non-metallic surfaces (e.g., plastic, glass).

Low Power Consumption: Ideal for battery-powered projects and low-energy applications.

Compact Design: Small PCB with a single touch pad and clear pin labels.

Pinout:

VCC – Power

GND – Ground

I/O – Digital output