ITEM NAME:Reliable 12V 1 channel relay module optocoupler High and low level trigger lj Reliable 12V 1 channel relay module optocoupler High and low level trigger lj a.imagelink a:hover.imagelink {color:#6d0000;.2, using SMD optocoupler isolation, driving ability, stable performance; trigger current 5mA;. 6, the power indicator (green), relay status indicator (red). 1, NO: normally open relay interface, the relay before the vacant after the pull shorted with COM.
