Viking LM-1A Message Waiting LED Lamp Retrofit Kit

Message Waiting LED Lamp Retrofit Kit provides visual lamp indication of message waiting and ringing. Features: Compatible with any telephone system with standard DC message waiting voltages ranging from 90VDC to 120 VDC Fully modular for quick plug-in installation by non-telephone personnel LED will blink at a steady rate when message waiting voltage is detected Flickers when phone rings, helping to reduce noise in quiet areas Attractive styling Easy retrofit mounting LED Color: Red Cover Color: Beige Note: The LM-1A is not compatible with any AT&T phone system.