Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	2.0V - 5.5V
Output Current	Max 8mA (Low), Max 4mA (High)
Response Time	Approx. 60ms at VDD=3V, No load
Interface Type	Digital Output (CMOS)
Operating Mode	Toggle (Self-Locking) or Momentary (Jog)
Sensitivity Adjustment	Via external capacitor (C1)
PCB Dimensions	16mm x 16mm
Mounting Hole Diameter	3.0mm
Package Includes	1x TTP223 Module, 1x Header Pin Set
Application Scope	Touch lamps, control panels, DIY electronics

6 reviews

Anonymous

Mar 27, 2026

Rating: 4/5

Solid performance

No issues with stability. It handles minor voltage fluctuations well. Only giving 4 stars because the included headers were slightly bent, but that's minor.

Anonymous

Mar 22, 2026

Rating: 5/5

Compact and reliable

The size is perfect for fitting into small enclosures. I used four of these to build a custom keypad, and they all respond instantly. Highly recommended.

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect for Arduino projects

This module works flawlessly with my Arduino Uno. The sensitivity is adjustable, and the toggle mode is great for making a touch lamp. Very easy to wire up.

Anonymous

Mar 13, 2026

Rating: 5/5

Great replacement part

Bought this to replace a faulty sensor in an old device. The pinout is standard, and it dropped right in. The self-locking feature works exactly as described.

Anonymous

Mar 10, 2026

Rating: 4/5

Good value, needs calibration

Works well once you figure out the right capacitor value for your specific setup. Out of the box, it was a bit too sensitive for thick acrylic, but adding a small cap fixed it.

Anonymous

Mar 09, 2026

Rating: 5/5

Beginner friendly

As someone new to electronics, I found this very easy to use. Plenty of tutorials online show how to connect it. It lit up my LED on the first try!

5 FAQ

Q: What is the maximum current this output can drive directly?

A: The direct output current is limited (approx. 4-8mA). It is sufficient to drive an indicator LED with a resistor, but for driving relays or motors, you should use a transistor or MOSFET as a switch.

Q: Is there a delay after power-on before it becomes active?

A: Yes, there is a stabilization time of approximately 0.2 seconds after power-up during which the sensor calibrates itself. Touch inputs during this brief period may not be registered.

Q: Does this come with soldered header pins?

A: The module usually comes with a separate bag of header pins that you need to solder yourself, allowing you to choose between straight or right-angle headers based on your project needs.

Q: Can this module detect touch through glass or acrylic?

A: Yes, the TTP223 can detect touch through non-conductive materials like glass or acrylic, typically up to 5-10mm thickness depending on the material and sensitivity settings.

Q: How do I switch between Toggle and Momentary mode?

A: The mode is selected by the state of the AHLB pin. Connecting AHLB to VSS enables Toggle mode, while connecting it to VDD enables Momentary mode. Please refer to the datasheet for the specific pin layout on this board.

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