The SF121 Single and SF122 Dual Patient Stations include one or two 1/4" jacks for call cords, one or two call-assurance LEDs, and a single button to reset calls. Pressing the call cord's button registers a call at the NC415AV/ NC404TS Master Station and LI122UN Room Controller with Dome Light. Similarly, a call is registered if the call cord is accidentally removed from the call cord jack. Using an optional dummy plug prevents the station from placing a cord-out call. Mount the station using an IH121K Single-Gang Mounting Kit, or mount two stations together using an IH122K DualGang Mounting Kit. The station snaps into the kit's plastic bezel and then onto the kit's surface mounting plate, leaving no visible screw holes.