TTP223 1-Channel Capacitive Touch Sensor Module (Red PCB)

Overview

A capacitive touch sensor module — outputs a digital signal when a fingertip touches the sensing pad, no physical button movement needed.

Key Specs

Pinout

VCC, GND, SIG (digital output)

Features

• No moving parts — purely capacitive sensing
• Simple single-pin digital output

Compatible With

Arduino, ESP32, ESP8266, any digital-input-capable MCU

Use Cases

• Touch-activated switches
• Replacing a physical push button with a touch surface

FAQ

Does it work through a thin non-conductive surface? Often yes — capacitive sensors can typically be triggered through thin plastic or glass, useful for sealed enclosures.