Model FC-16-D Quantity 1 Color Blue Material PCB Features Conform to international safety standard with isolation groove between control area and load area; Use genuine songle relay; With power and relay action indicator light on when close and off when break. ON port and COM port will connecting when there is signal at the input port. Control DC and AC signal can control 220V load with 2 normally open contacts and 2 normally closed contacts. Blue KF301 terminal connecting to control cable more easier. Specification 2 Channel 9V high level trigger Application Great for Arduino DIY English Manual/Spec Provides cable connecting manual Packing List 1 x Module