5 Pcs Button Key Module Universal 4 Key Push Button Switch Module Board Keyboard Board for DIY Accessory

• WORKING VOLTAGE: DC 1.2V, 1.8V, 2.5V, 3V, 3.3V, 4.5V, 5V, 9V, 12V, 24V, 36V, 48V.
• WORKING PARAMETERS: GND K1 K2 K3 K4" 4 PIN OUT 2.54mm . 4-button Common Cathode key module(When pressed output low level).
• HIGH QUALITY: Adopted of high quality electronic components, and precision process, ensure for the durability.
• APPLICATIONThe 4-key keyboard module is suitable for automatic modification, motor control, bulb, LED string, micro pump, solenoid.
• USAGE --- 4-key keyboard module can be inserted directly into uno mega2560 due,Ideal for linking up to your UNO Mini Nano Mega2560 Breadboard raspberry pi banana pi etc.

Specification: Working voltage: DC 0-48V GND K1 K2 K3 K4" 4 PIN OUT 2.54mm Size:12.7*33mm/0.5*1.3in Weight: Approx.3g/0.1oz Package list: 5 x 4 Button Key Module