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 @

SPECIFICATIONS:

IPower supply voltage VCC: 2.0 3 5.5 V
Output high VOH: 0.8VCC 
Output low VOL: 0.3VCC
Output Pin Sink Current (@ VCC = 3V, VOL = 0.6V): 8mA
Output pin pull-up current (@ VCC = 3V, VOH = 2.4V): 4mA
Response time (low power mode): 220mS
Response time (touch mode): 60mS

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.