TTP229 4x4 Capacitive Touch Keypad Module (16 Keys)
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Prices updated: 12 Oct 2026
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About this product
A 16-key capacitive touch keypad module built around the TTP229 touch-sensing IC, with an on-board power indicator. It works from 2.4 V to 5.5 V and offers selectable output modes, suiting touch-controlled panels without mechanical switches.
Specifications
- Number of keys
- 16 (4 × 4)
- Touch sensing IC
- TTP229
- Working voltage
- 2.4 V – 5.5 V
- Output mode
- Selectable (output mode, max output time, fast/low-power)
- PCB size
- 49.3 × 64.5 mm
- Power indicator
- On-board LED
Frequently asked questions
How do I connect it to a microcontroller?
Connect power and the module's digital output pins to the microcontroller. Check the pin labels on the board, since the TTP229 communicates through its own output interface rather than one pin per key.
Will it work with a 3.3 V board?
The working voltage range is 2.4 V to 5.5 V, which includes 3.3 V. Confirm that the logic levels of your controller match the module's outputs.
