Viking LM-1A Universal Phone Message Waiting Lamp

VK-LM-1A Viking Electronics Universal Phone Message Waiting Lamp Provide visual lamp indication of Message waiting and Ringing Message waiting lamp retrofit kit is 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 stead rate when the message waiting voltage is detected. VK-LM-1A has easy retrofit mounting Works with nearly all message waiting voltages. PLEASE VERIFY COMPATIBILITY PRIOR TO PURCHASING. VK-LM-1A USER GUIDE