A 25 zone interface unit used with Louroe Alarming Base Stations(ALA-4/8 and DG-12/25 Series). It supervises the current running between the remote microphone and the base station, and detects disruptions such as short circuits, disconnections, or cut wires. When a disruption in current occurs, a lighted LED with a buzzer alarm identifies the problem zone. LS-25 fits a standard 19" rack mount. List Price: $1545.00		Specifications Instructions Wiring Requirements Decal Notice Audio Accessories and Miscellanous Products DA-4 HD-8 HP-15135 LA-1000 LS-25 MA-1 MS-1 OS-1 SA-1A TR-1