2PCS New 2 Channel 5V Relay Module with optocoupler for Arduino PIC ARM DSP AVR

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1 Channel 5V Relay Module Shield for Arduino uno 1280 2560 ARM PIC AVR DSP STM32

1 Channel 12V Relay Module with optocoupler for Arduino PIC ARM DSP AVR

5/9/12/24V 1/2/4 Channel Relay Board Module Optocoupler for Arduino PiC ARM AVR

5V/12V/24V SLA-05VDC-SL-A RELAY Module Arduino AVR PIC DSP ARM