DC 5V 12V 4/8channels Relay Module With Optocoupler Isolation High Level Trigger
ab 4,62 €
Optocoupler isolation, good anti-interference. Optocoupler relay module 1. This suction, release, so as to achieve the purpose of conduction in the circuit, cut off. Adapter Module. It refers to the large current that the relay generates to release the action.
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