10pcs 1-channel relay module board with high or low level trigger, optocoupler isolation support, DC 5V
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Buy 10pcs 1-channel relay module board with high or low level trigger, optocoupler isolation support, DC 5V
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10pcs 1-channel relay module board with high or low level trigger, optocoupler isolation support, DC 5V | £19.99 |  | |||
Fault-tolerant design: Fault-tolerant design; even if the control line is broken, the relay will not operate. All relay interfaces can be wired...
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