.. note::

    Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts.

    **Why Join?**

    - **Expert Support**: Solve post-sale issues and technical challenges with help from our community and team.
    - **Learn & Share**: Exchange tips and tutorials to enhance your skills.
    - **Exclusive Previews**: Get early access to new product announcements and sneak peeks.
    - **Special Discounts**: Enjoy exclusive discounts on our newest products.
    - **Festive Promotions and Giveaways**: Take part in giveaways and holiday promotions.

    👉 Ready to explore and create with us? Click [|link_sf_facebook|] and join today!

Dual Touch Sensor
==================================

.. image:: img/cpn_touchswitch.png
   :width: 200
   :align: center

Dual channel touch sensor, based on two ttp223 touch sensors.
When a touch signal is detected, the corresponding pin level will be pulled low.

TTP223 is a touch pad detector IC that provides 1 touch key.
The touch detection IC is specially designed to replace the traditional direct keys with different pad sizes.
It features low power consumption and wide operating voltage.


**Specifications**

* Power Supply: 2.0V~5.5V
* Signal Output: Digital signal
* Connector: SH1.0 4P

**Pin Out**

* GND - Ground Input
* VCC - Power Supply Input
* SIG1 - Touch signal 1, low level means touch
* SIG2 - Touch signal 2, low level means touch