Model FC-18 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. Specification 1 Channel 9V low level trigger control DC and AC signal can control 220V load with 1 normally open contact and 1 normally closed contact. Application Great for Arduino DIY. English Manual/Spec Provides cable connecting manual Packing List 1 x Power relay module http://m5.img.dxcdn.com/CDDriver/CD/sku.192890.docx