TTP223 Touch Switch Module TTP223B Digital Touch Sensor Module Capacitive Touch Switch 1 Channel for Arduino DIY Kit
Capacitive type touch switch module The module is based on a touch detection IC (TTP223B)'s. Under normal conditions, the module output low, low-power mode to mode; touch of a finger when the corresponding position, the module will output high, the mode is switched to fast mode; when for 12 seconds without touching, the mode and switch to low power mode.

Module features are as follows:
1. For Jog type: the initial state is low, high touch, do not touch is low (similar touch of a button feature)
2. Low power consumption
3. Power supply for 2 ~ 5.5V DC
4. Touch surface can be used as positive and negative, can replace the traditional touch of a button
5. 4 M2 screws positioning holes for easy installation
6. Control Interface: A total of three pins (GND, VCC, SIG), GND to ground, VCC is the power supply, SIG digital signal output pin;
7. Power Indicator: Green LED, power on the right that is shiny;
8. Touch area: Similar to a fingerprint icon inside the area, you can touch the trigger finger.
9. Positioning holes: 4 M2 screws positioning hole diameter is 2.2mm, the positioning of the module is easy to install, to achieve inter-module combination;