Features:

100% Brand new and high quality!
Plug and play, easy to use. Compatible with the mainstream 2.54 interfaces and 4-Pin Grove interfaces in the market.
With use of M4 standard fixed holes, compatible with M4-standard kits.
 
Specifications:
PCB Size: 38.0mm x 24.0mm x 1.6mm
Working voltage: 3.3 or 5V DC
Operating voltage: 3.3 or 5V DC
Compatible interfaces: 2.54 3-pin interface and 4-pin Grove interface 
Color: Blue
Electrical characteristics 
Supply voltage: Min.2, Typical 3, Max. 5.5, Unit VDC
Working current(VCC=5V): Typical 18, Unit uA
Digital output voltage(VCC=5V): Min. 0, Max. 5, Unit V
 
Package includes:
1pc 3P/4P Electronic Brick Double Side Touch Pad Button Switch Sensor Module