Quality | Can be inserted directly into mega2560 due Ideal for linking up to your Mini Mega2560 Breadboard banana pi etc or others MCU PLD CPU AVR STM32 ARM PIC C51 NRF24LE1 CC2530 MSP430 STM8 FPGA CPLD |
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Etc | 4 button Common Cathode key module When pressed output low |
Level | GND K1 K2 K3 |
K4 | Adopted of high quality electronic components and accuracy process ensure for the durability |
Universal 4 Key Push Button Switch Module Keyboard Board Review
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