Power supplies are a crucial, but often unnoticed, aspect of electromechanical access control. RCI power supplies offer reliable power to convert electric current from a source to the correct voltage, current, and frequency. dormakaba offers RCI power supplies that are easy to install with field selectable voltages that filter and regulate DC output with AC fail output relay. dormakaba also carries RCI power supply options such as bridge rectifiers to change AC to DC for silent operation, day timers for scheduled access, and distribution boards for when flexible power distribution is required.