Features HIGH/LOW LEVEL TRIGGER:This is a high-low level trigger 2-channel relay module that can control two loads SWITCH LOAD :Large load capacity, the relay can connect to maximum 30A, 250V loads POWER FUNCTION:The module can be set high or low triggered by jumper.Module size:3.2x2.3*2.2inch EASY to INSTALL: Equipped with screwed terminal plate and fixed bolt holes(diameter: 3.1 mm) on both sides for easy installation. LOAD CAPACITY: 30A, 250V AC/ 30V DC Specifications: Power Supply: AC100-250V Input Control Signal Voltage: 0-1V DC(low state relay), 1.5-5V DC(high state relay) Working Current: 378mA Load Capacity: 30A, 250V AC/ 30V DC Trigger Input:  DC +: 5V DC -: GND CH1: Signal trigger terminal CH2: Signal trigger terminal Package Includes: 1 x Relay Module Package List