The PS-48-RGA power supply provides talk battery plus standard ring voltage where and when needed. Housed in a convenient wall mount enclosure, the PS-48-RGA comes complete with a plug-in power supply. The PS-48-RGA will provide telephone communication equipment with 48V DC talk battery. In addition, the PS-48-RGA will produce 90V 20 Hz sine wave ring voltage rated up to 10 REN. This allows a phone system to sequence up to 30 ringing phones.