Digital Push Button Module

This is a basic button application module. Momentary Pushbutton Switch usually stays open. When it is pressed down, circuit connected; when it is released, it will bounce back to the status of disconnection. 
The module has three pins for easy connection. You can simply plug it into an IO shield to have your first try of Arduino.  
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Details 
Interface: Digital 
Supply Voltage: 3.3V to 5V 
Easy to plug and operate 
Large button keypad and high-quality button cap 
Standard assembling structure 
Easily recognizable pins 
Icons illustrate sensor function clearly 
Achieve interactive works