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12V 16/5V 2/4/8 Channel Relay Board Module Optocoupler LED fr Arduino PiC ARM CQ

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2CH No- Optocoupler 4CH No- Optocoupler 5V 1 channel relay module for PIC AVR DSP ARM Arduino. (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). 4 channel relay module DC 5V, NO with optoco...
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Item location:China
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