Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Chip Model	TTP223 / TTP224 / TTP226
Operating Voltage	2.0V - 5.5V DC
Output Mode	Momentary or Self-Locking (Configurable)
Channel Options	1, 4, 8, or 16 Channels
Response Time	Approx. 60ms
Sensing Distance	Up to 5mm (depends on panel thickness)
Interface Type	Digital TTL Output
PCB Dimensions	Varies by channel count (e.g., 16x16mm for 1-channel)
Mounting Hole Size	3.0mm diameter
Application Scope	Home Automation, DIY Electronics, Industrial Control Panels

6 reviews

Anonymous

Mar 26, 2026

Rating: 5/5

Reliable and responsive

I've tested these behind a 3mm acrylic sheet, and they detect touch instantly. The low power consumption makes them ideal for battery-powered projects. Highly recommended for prototyping.

Anonymous

Mar 26, 2026

Rating: 4/5

Good value, minor soldering needed

Great product for the price. You do need to solder the configuration pads to switch between momentary and self-locking modes, but the silkscreen labels make it clear. One channel was slightly less sensitive than the others, but still usable.

Anonymous

Mar 19, 2026

Rating: 4/5

Great for learning embedded systems

Used these in a university project. Documentation online is plentiful which helped a lot. Deducting one star because the pin headers weren't included, had to source those separately.

Anonymous

Mar 04, 2026

Rating: 5/5

Exactly as described

Ordered the 16-channel module for a large keypad project. All channels work independently without cross-talk. The form factor is compact enough to fit into tight enclosures.

Anonymous

Mar 03, 2026

Rating: 5/5

Stable performance

No false triggers even in a noisy electrical environment. The capacitive sensing technology is robust. I replaced mechanical buttons in an old radio with these, and it looks modern and works better.

Anonymous

Mar 01, 2026

Rating: 5/5

Perfect for my Arduino project

These modules are incredibly easy to integrate. I used the 4-channel version for a custom control panel, and the sensitivity is adjustable via the onboard pads. Works flawlessly with 3.3V and 5V logic.

5 FAQ

Q: Do you offer bulk discounts for educational institutions?

A: Yes, we offer special pricing for schools and universities purchasing in large quantities. Please contact our sales department directly through the 'Contact Us' page with your requirements for a custom quote.

Q: Can this module work through glass or plastic?

A: Yes, the TTP series can detect touch through non-metallic materials like glass, plastic, or wood, provided the thickness does not exceed the sensing range (typically up to 5mm).

Q: How do I change the output from momentary to self-locking?

A: There are specific solder pads on the PCB labeled for configuration. By bridging the correct pads with a small amount of solder, you can toggle between momentary and self-locking modes. Please refer to the datasheet diagram for your specific channel count.

Q: What is the maximum current these modules can switch directly?

A: These are sensor modules designed to provide a logic signal, not to drive high-power loads directly. The output current is low (typically around 2-4mA). You should use a transistor, MOSFET, or relay to control higher current devices based on the sensor's signal.

Q: Is this compatible with Raspberry Pi GPIO pins?

A: Absolutely. Since the output is digital TTL, it is fully compatible with Raspberry Pi GPIO pins. Just ensure you connect the VCC to either 3.3V or 5V depending on your Pi model and wiring setup.

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