The relay board provides normally open or normally closed relays that can be interconnected. Ideal for interlock installations or wherever a basic relay board is used to trigger action, shunt alarms or report status from an access control system. 4 DPDT relays with 2 A contacts. Individual coil connections, common negative or positive. Replaces socket mount relays. Dry contact connections via screw terminals. Relays have low current coils (13 mA at 12 VDC; 8 mA at 24 VDC). Allows operation from most LED drive outputs.