Viking Electronics PS-48RG 48V Talk Battery and Ring Voltage Power Supply
Overview
The PS-48RG is a dedicated power supply from Viking Electronics that simultaneously delivers 48V DC talk battery and 90V 20Hz sine wave ring voltage to telephone communication equipment. If you're integrating a Viking intercom, door phone, or entry system into an environment without a traditional PBX or PSTN line to draw power and ring signal from, the PS-48RG fills that gap — giving downstream equipment exactly the DC talk voltage and AC ring signal it needs to operate normally. It supports sequencing of up to 30 ringing phones, making it a practical fit for small-to-midsize intercom and entry phone deployments where multiple endpoints need to ring simultaneously.
Compatibility
The PS-48RG is designed for use with Viking Electronics telephone communication equipment that requires standard 48V talk battery and 90V ring voltage — the same electrical interface used across Viking's door phone, entry system, and intercom product lines. Compatible deployment contexts include Viking entry panels, emergency phones, and any Viking device that expects a standard POTS-style power and ring source. It is not a camera power supply or PoE source; do not use it with IP cameras or network devices requiring regulated DC at different voltages. Input voltage is 90V AC, so verify your local supply before installation. Consult Viking's product documentation to confirm electrical compatibility with a specific Viking model before ordering.
Installation Notes
The PS-48RG accepts 90V AC input — confirm this matches your facility's supply. The 20Hz sine wave ring output is fixed; equipment expecting 16Hz or 25Hz ring cadence may not respond correctly. When sequencing up to 30 phones, plan wiring runs to account for loop current requirements across all endpoints. Pair with appropriate low-voltage power distribution if running multiple circuits from a single installation point.
