ITEM NAME:5V 1 Channel Relay Module Board Low Level Trigger w/Optocoupler Isolation #gib Store Home Promotion Hot Item Add to Fav.5V 1 Channel Relay Module Low Level Trigger with Optocoupler Isolation Protection Expansion Board. Strong anti-interference ability and photoelectric isolation. 1 x 5V 1 Channel Relay Module. Rated current: 5V.
