5V 4 Channel Relay Module Board no optocoupler relay Board for Arduino 8051 AVR PIC DSP ARM ARM MSP430 TTL logic Home-appliance

5V 4 Channel Relay Module Board no optocoupler relay Board for Arduino 8051 AVR PIC DSP ARM ARM MSP430 TTL logic Home-appliance
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sku: 1005005587685918
$5.45
Shipping from: China
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