TTP223B Capacitive Touch Sensor Module | 1-Channel Digital Switch

Modernize Your Projects with Capacitive Touch Upgrade your electronics projects by replacing clunky mechanical push-buttons with the sleek, solid-state TTP223B Capacitive Touch Sensor Module. This module operates in a "jog" (momentary) mode: it outputs a low-level signal by default, switches to a high-level signal when your finger touches the sensor area, and immediately returns to a low-level state when you remove your finger. An onboard green LED provides instant visual feedback, illuminating whenever a touch is registered. Create Hidden "Magic" Switches One of the most powerful features of capacitive touch technology is its ability to detect proximity through non-metallic materials. You can mount this module behind thin layers of plastic, acrylic, glass, or even paper. As long as the user touches the correct spot on the surface, the sensor will trigger. This allows you to create seamless, waterproof, and completely hidden buttons integrated directly into walls, desktop enclosures, or 3D-printed project cases. Technician Tip When integrating this sensor behind a panel, ensure there is no air gap between the sensor pad (the concentric circles) and the covering material. Use double-sided tape to mount it flush against the surface for the best sensitivity. The module features an automatic low-power mode; if it detects no touches for 12 seconds, it drops into a power-saving state, making it excellent for battery-powered Arduino or ESP32 projects. If you need help designing a custom smart home interface, visit our physical store at Sun Cheong Computer Co. Ltd. in Sham Shui Po for expert advice.