Brand N/A Model N/A Quantity 1 Color Blue Material PCB board Features Strong anti-interference using optical isolation and diode freewheeling protection; Relay trigger part uses dual-sided thickened cloth which is safe and reliable; Uses high quality Songle relay and 5.08mm terminal; Each relay has a pull on / off indicator for easier working; Each relay output leads to two sets of normally open and normally closed electric shock convenient and flexible to use; Input and output power supply can be used one or two groups; With installed screws; VCC connects power positive; GND connects power negative; IN1-IN4 is signal input trigger port; VCC1 is the single power supply port Specification Relay trigger capacity: AC 250V 10A DC30V 10A Application Great for DIY project English Manual/Spec Yes Packing List 1 x Module