Universal 4 Key Push Button Switch Module Keyboard Board for for Arduino DIY KIT Universal

Features: Can be inserted directly into uno mega2560 due,Ideal for linking up to your UNO Mini Nano Mega2560 Breadboard raspberry pi banana pi  etc,or others MCU PLD CPU ( AVR STM32 ARM PIC C51 NRF24LE1 CC2530 MSP430 STM8 FPGA CPLD etc.)  4-button Common Cathode key module(When pressed output low level).   GND K1 K2 K3 K4" 4 PIN OUT  2.54mm  Adopted of high quality electronic components, and precision process, ensure for the durability  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: 1 x 4 Button Key Modulevalve