The TTP223B Touch Detection Sensor Module is a single-channel capacitive touch sensor drawing only 4mA operating current, responding within 220ms, operating from 2V to 5.5V DC, with SIG, VCC, and GND pins. This touch sensor module’s 4mA current draw is notably low for an active sensing component — low enough to run continuously from a small coin cell or LiPo battery for extended periods without meaningful battery drain, making it a practical choice for portable and battery-powered touch interfaces.
The capacitive touch sensor module detects touch through electric field disturbance rather than physical contact pressure — the sensor’s electric field extends slightly above the pad surface, which means this ttp223b touch sensor can detect a finger touch even through a thin layer of non-conductive material like acrylic sheeting, paint, or a thin plastic enclosure wall placed over the pad, enabling hidden or embedded touch points with no visible opening in the enclosure.
the touch sensor arduino’s through-material sensitivity depends on material thickness and type — thicker or more insulating materials weaken the electric field disturbance enough to prevent reliable detection, so very thick enclosure walls or highly insulating materials like rubber will reduce sensitivity significantly compared to direct skin contact. Well-suited for enthusiast building touch interfaces and low-current capacitive sensing electronics projects.
Related Products:
- Checkout Touch Detection SensorÂ
- Also explore: Electronics Modules – Relay, Power, Audio
Features:
- low current draw ideal for battery-powered touch builds
- Electric field sensing enables touch through thin non-conductive materials
- Single-channel 3-pin design for minimal wiring complexity
- 220ms response time for real-time button-replacement performance
- 2V to 5.5V compatible with Arduino and battery-powered boards
Pin diagram of TTP223B touch sensor:
Technical specifications:
 Applications:
- TTP223B used for Arduino battery-powered hidden touch panel build
- College project uses touch sensor module for electric field sensing demo
- Portable device uses capacitive touch sensor module for India low-power UI
- Sealed enclosure uses touch sensor arduino for invisible touch button
- Wearable project uses ttp223b touch sensor for thin-layer touch trigger
Package includes:
- 1 x TTP223B Touch Detection Sensor Module
Nupur Singhal –
Exceeded expectations
Avni Oberoi –
Suitable for smart switches, interactive electronics projects, and embedded systems requiring accurate and responsive touch detection.
Sayyam Chauhan –
Trusted store product
Tanuj Khurana –
Same day dispatch and safe packaging ensured a smooth purchasing experience, while quick response support helped with project integration and sensor setup guidance