5V 4 channel Relay module with optocoupler isolation High and low level trigger

5V 4 channel Relay module with optocoupler isolation High and low level trigger. 2, using SMD optocoupler isolation, driving ability, stable performance ; trigger current 5mA;. When com with low short circuit, triggering the corresponding relay is low, while the high end of the short com high trigger.. Condition:: New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is applicable). If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. See the seller's listing for full details. See all condition definitions : Brand: : Unbranded , MPN: : Does Not Apply: UPC: : Does Not Apply ,

5V 4 channel Relay module with optocoupler isolation High and low level trigger
5V 4 channel Relay module with optocoupler isolation High and low level trigger
5V 4 channel Relay module with optocoupler isolation High and low level trigger
5V 4 channel Relay module with optocoupler isolation High and low level trigger