RF-54/A Card Switch Product InformationThe RF-54/A unit is used in hotel and rented room installation to control the electric door lock and the light and A/C circuits of a room. It operates in cooperation with 1 or 2 RFID (RF-52/RF-53) card switches and optionally with one power expansion unit (RF-55) and also with one or more magnetic window contacts which are also optional. Horizontal TabsDocumentation User Manual