5 V 2-Kanal Relaismodul mit Optokoppler Unterstützung High und Low Level Trigger
1,39 €
Using SMD OPTOCOUPLER isolation, driving ability, stable performance ; trigger current 5mA;. The power indicator ( green ), relay status indicator ( red ). Com with low short circuit, triggering the corresponding relay is low, while the high end of the short com high trigger.
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