The SR-1 will generate loud ringing from an analog ringing line or from a dry contac closure. There are 4 different ringing sounds to choose from. Loudness is easily adjusted with a volume contro; knob and test button. The AR-1ft. s unique sounding ring us useful for employees that often work away from their desks allowing them to instantly recognize when their phone is ringing. A second set of contact inputs will trigger a door chime (doorbell)sound. This can used to notify that a door has opened or used as a door bell or push for assistance button.
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