RATH 2100 SERIES SMARTPHONE BOARD REPLACEMENT; 24V; 2100 907RAI Rath 2500 PWR24U CALL BOX POWER SUPPLY 24V Nexlar E Commerce 2400 808NSP Phone by RATH CORPORATION Mitsubishi Five way Elevator Intercom Telephone, Elevator Telephone. 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)