5 Stück 5 V 4 Kanal Relaismodul mit Opto Isolierung und High/Low Level Trigger
4,05 €
SMD optocoupler isolation, strong driving ability, stable performance; trigger current 5mA;. power indicator (green), 4 relay state indicator (red). 6.NC1-NC4: After the relay NC interfaces, relay and COM short-circuited before, pull vacant.
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