China Industrial Lift Intercom Elevator phone for emergency Telephone Rath Microtech 2400 910RD Emergency Phone Speakerphone Red Call Box A10 GE 1 Wall Jack Phone Mount Wall Plate White 76294 The Home Depot RATH SmartPhone 5 & 6 SoundNet Elevator phone programming YouTube LD246S Elevator Intercom System Master Phone J&R JR505 SC GSM Emergency Elevator Telephone, 1 Button, Autodial Phone. RATH J24 2504 OEM or Behind the Panel Mount Elevator Phones 2VDC 1 3 watt LED (solid light when dialing, flashes when answered) Can be installed on an IP phone system when used with our 2100 VoIP2CS Interface Device Environmental: 40F +150F Designed for 120vac or 24vac vdc power (5C4)