Description:
<br />Can be inserted directly into Ardiuno uno mega2560, ideal for linking up to your Ardiuno UNO Mini Nano Mega2560 etc,or others MCU ( AVR STM32 ARM7 ARM9 ARM10 PIC AT89C51 STC MSP430 FPGA CPLD etc.) 
<br /> 
<br />Features: 
<br />4-button Common Cathode key module
<br />" GND K1 K2 K3 K4" 4 PIN OUT  2.54mm
<br />Power Supply Voltage:3.3V-12V
<br />Size: 3.3x1.2cm/1.26x0.47inch  
<br />Quantity: 1 Pc
<br />Note:
<br />Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid
<br />Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
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<br />Package Contents:
<br />1 Pc x Key Button Board