Viking Electronics PS-2 120V AC to 12V DC Power Supply
Overview
The PS-2 is a wall-plug power supply from Viking Electronics that converts 120V AC mains power to regulated 12V DC at up to 500mA, delivered through a 2.1mm barrel connector. It is the specified power source for Viking accessory boards and devices — including the LDB-1 Loop Detect Board — where a clean, low-current 12V supply is required and no local DC bus is available. If you are wiring a Viking access control or telephony peripheral that calls for an external 12V adapter, the PS-2 is the factory-matched part to reach for.
Compatibility
The PS-2 is directly referenced as the power source for the Viking LDB-1 Loop Detect Board, providing the board's required 12V supply at up to 500mA. The 2.1mm barrel plug is a common connector on Viking access control and telephony peripheral devices; verify your device's barrel polarity and current draw does not exceed 500mA before substituting on unlisted models. A companion variant, the PS-2A, shares the same 120V AC / 12V DC rating — confirm the correct part number against your device's documentation when ordering.
Installation Notes
The PS-2 plugs directly into a standard 120V AC outlet. The 2.1mm output connector mates with the power jack on compatible Viking peripherals — no wiring termination required. Maximum output current is 500mA; devices drawing more than this will not be reliably powered. Shipping dimensions are 8 × 6 × 6 inches. For multi-device installations or higher-current requirements, a separate power supply sized to the aggregate load is required.
