Door control relay modules ensure compatibility of access hardware components and simplify system installation and troubleshooting. Modules may be ordered with or without power supplies. Different modules may be specified for one power supply. The isolated relay design allows small gauge cable runs of 22 gauge wire up to 1000 feet from the trigger device to the module.

Modules may be ordered with or without power supplies. Different function modules may be used in the same power supply or cabinet.

SDC’s 12VR series used in conjunction with SDC’s 600 series power supplies set at 24 VDC for locking devices and components, provides a separate 12 VDC, 1 Amp output for 12 VDC access controllers, readers, or other devices. The need for a separate power supply for 12 VDC and 24 VDC requirements within the same system is eliminated.