The TTP223B Digital Capacitive Touch Switch Sensor Module is built around the TTP223B touch-sensing IC, offering a modern alternative to traditional push-button switches. It simplifies user interaction by detecting touch input on a designated circular sensing area.

By default, the module remains in a low-power state with a low output. When a touch is detected, it outputs high and enters a quick-response state. If untouched for 12 seconds, it automatically returns to low-power mode.

The module can be easily mounted behind non-metallic surfaces like plastic, glass, acrylic, or even thin paper, allowing you to create hidden touch-sensitive controls in walls, desks, or custom enclosures—ideal for sleek and seamless interface designs.