Rescue Assistance 4200 Instructions depressing the call button on a call station causes a short acknowledge tone and steady call switch or LED illumination. At the control panel, the red annunciator LED in the zone switch for that call station steady. Whenever there are one or more calls placed that have not been acknowledged, a slow repeating alarm is sounded from the speaker at the control panel. Depressing that zone switch will acknowledge the call flashing the red annunciator LED within the zone switch, flashing the LED within the call station, illuminating the LED within the zone switch, and connecting 2-way voice communication between the control panel and call The control panel operator will immediately be able to listen to the person at the call station. When the voice path is established, a short tone is sounded at the call station. The control panel operator will be able to listen to the person at the call station. To speak to that person, push and hold the to talk on the control panel. Release the switch to listen. Volume level is for both talk directions and are independently on the 2009 amplifier located within the control panel. Momentarily depressing the zone switch again will voice communication to the call station but will not reset the call. The red annunciator LED and call station will continue to flash until the reset switch is momentarily depressed at the control panel. This will reset all zones. with zone switch on the control panel is a yellow fault LED. If a wire fault exists in the wiring between a station and the control panel, the fault LED for that zone will illuminate and a slow repeating audible alarm will at the control panel. communication can be initiated at any time to any call station by depressing the appropriate zone switch, the LED within that zone switch will illuminate. To cancel communication, depress the zone switch again. The green will turn off. FEATURES zone has an open collector transistor output (sink, rated at 500mA, 40V max.) which turns on from the time a call placed until the reset switch is depressed. These outputs are labeled AUX. Located on the power supply/tone board normally open relay contacts (125VDC/AC, 2.5A max.) which close if any zone is activated and remain closed until reset switch is depressed. These two terminals are labeled AUX.