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The TTP223 module is a compact, highly responsive capacitive touch switch designed to replace traditional mechanical buttons. Rather than relying on a physical switch mechanism that can wear out or fail after repeated presses, it detects the touch of a finger through a conductive surface and generates a stable digital output signal in response, giving essentially the same functional result as a button press without any moving parts.
Because there's no mechanism to wear out, it offers a long working life, and its response is fast: 220ms in low power mode, dropping to just 60ms in active touch mode, quick enough to feel immediate and responsive in normal use.
Operating voltage spans a wide 2V to 5.5VDC, covering essentially every common logic voltage a hobby project might use, and it interfaces easily with Arduino, ESP32 and Raspberry Pi boards without extra circuitry. The module supports adjustable touch mode behaviour, allowing it to be configured for momentary output (active only while touched) or toggle output (switching state with each touch), depending on how a specific setup is wired or configured.
Its compact, lightweight design makes it easy to mount behind a thin panel or enclosure wall, since capacitive sensing can often work through a thin non-conductive material, letting the actual electronics stay hidden while still responding to a touch on the outer surface.
Anyone building a custom control panel, a sealed enclosure without a mechanical button hole, or a smart-switch project that wants a modern, wear-free touch input will find the TTP223 a straightforward, reliable replacement for a standard push button.
Through capacitive sensing on a conductive surface, rather than a mechanical switch mechanism.
220ms in low power mode, or 60ms in touch mode.
2 to 5.5VDC.
No, since it has no moving parts, unlike a mechanical button.
Yes, its touch mode can be configured as momentary or toggle depending on setup.
| Brand | Generic |
|---|---|
| Output Signal | Digital |
| Sensor Type | Capacitive Touch |
| Selling unit | PCS |
