The silver DA-1DS is a 1-call door station that connects to the DA-1MD Master Handset via 2 wires. It features a 12VAC output for door-strike connection selective call buttons and illuminated directories. The door-release is powered by the door station without the need for an ...The silver DA-1DS is a 1-call door station that connects to the DA-1MD Master Handset via 2 wires.
It features a 12VAC output for door-strike connection selective call buttons and illuminated directories. The door-release is powered by the door station without the need for an additional transformer or wiring.The DA-1MD Master Handset features a service button to control an external device call tone volume control with mute indicator handset for communication and button for door release. The UL listed class 2 PT-1211C power supply outputs 15VAC 700mA.