Description:High voltage level trigger refersto a forward voltage between signal trigger end(IN) and power cathode, is a trigger way of connecting anode of power with trigger end. When there is forward voltage or the voltage reaches to a certain trigger amount at the trigger end, relay is actuated. Low voltage level trigger refers to the voltage between signal trigger end and power cathode is 0 V, or voltage of trigger end is lower than that of power anode, and relay is actuated. Usually connect power cathode with triggerend.Features:1, Power supply of module should be direct current, and voltage should be associated to that of relay.2, The controlled voltage range of relay is AC 24 V to 380 V. Max Current: 8 A.3, Convenient KF301 green input wiring terminals.4, Safe KF1000-2P output wiring terminals.5, 380 V 8 A solid-state relay.Specifications:Input Voltage Range: DC5 V to 12 V Input Control Signal Voltage: High and low voltage level can be set (short circuit boards welding on the back plate, the default is low voltage level)Weight: 39 g(approx.)Input Interface:DC+DC-CH1: 1 channel relay module signal triggering endPackage includes:1 x Relay Module