·         The module is based on a touch-sensing IC  (TTP223B) capacitive touch switch module. In the normal state, the module output  low, low power consumption; When a finger touches the corresponding position,  the module output high, if not touched for 12 seconds, switch to low-power mode.

·         Jog type : the initial state is low , high  touch , do not touch is low ( similar touch of a button feature )

·         Module can be installed in such as surface  plastic, glass of non-metallic materials

·         In addition to the thin paper ( non-metallic )  covering the surface of the module , as long as the correct location of the  touch , you can make hidden in the walls, desktops and other parts of buttons

Features:

·         Low power consumption

·         Power supply for 2 ~ 5.5V DC

·         Can replace the traditional touch of a button

·         Four M2 screws positioning holes for easy  installation

Specification:

Item	Min	Typical	Max	Unit
Power supply voltage VCC	2.0	3	5.5	V
Output high VOH	–	0.8VCC	–	V
Output low VOL	–	–	0.3VCC	V
Output Pin Sink Current (@ VCC = 3V, VOL = 0.6V)	–	8	–	mA
Output pin pull-up current (@ VCC = 3V, VOH = 2.4V)	–	4	–	mA
Response time (low power mode)	–	–	220	mS
Response time (touch mode)	–	–	60	mS
Size	24x24x7.2			mm

Touch Sensor Interface :(the last picture show)

-Control Interface : A total of three pins (GND,  VCC, SIG), GND to ground , VCC is the power supply , SIG digital signal output  pin ;

-Power Indicator : Green LED, power on the right that is shiny ;

-Touch area : Similar to a fingerprint icon inside the area , you can touch the  trigger finger .

-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 ;