Spec Sheet Preview: The Alpha Communications® / Golmar SAR-12/24 Auxiliary Relay is used only with the G2+ or GB2, video-intercom monitors. The SAR-12/24 is activated when the G2+ or GB2 video monitor station is called from a door entry station, and provides a dry contact relay closure to activate an auxiliary signaling device. All SAR-12/24 field connections are positive screw terminal type, and the SAR-12/24 is powered directly from the 12VDC to 18VDC provided at the apartment station, when called from an entry station. Each G2+ or GB2 video monitor station that requires remote signaling requires a minimum o …