System Sensor P4W Wall-Mount Horn Strobe White 4-Wire

System Sensor P4W Wall-Mount Horn Strobe White 4-Wire

Overview

The P4W is a wall-mounted audible/visual notification appliance designed for fire alarm and mass notification system installations in commercial and institutional buildings. Operating at 12VDC or 24VDC (automatic voltage selection), this white-finish unit combines a horn and strobe into a single 4-wire device, reducing circuit complexity and back-box footprint during retrofits or new construction. Deploy it in corridors, stairwells, and common areas where standard wall-mount spacing is required.

Compatibility

The P4W integrates with fire alarm control panels and notification circuits that support 4-wire signaling architecture. It is electrically compatible with legacy SpectrAlert devices, making it a direct replacement option in existing SpectrAlert Advance installations. Verify your panel's notification appliance compatibility list before ordering — most commercial fire alarm systems (Simplex, Notifier, Edwards, Honeywell) support standard 4-wire horn strobes, but panel-specific approval is mandatory for code compliance.

Installation Notes

The P4W uses a universal mounting plate with integrated shorting spring that tests wiring continuity before device installation — a key feature that eliminates costly ground faults during commissioning. The plug-in design minimizes intrusion into the back box. White plastic housing accepts screw-mounted lens attachments for field-selectable candela output: 15, 15/75, 30, 75, 95, 110, 115, 135, 150, 177, and 185 candela. Horn output is rated at 88+ dB at 16 volts in a UL reverberant room; verify decibel requirements against your Authority Having Jurisdiction (AHJ) for assembly occupancy types. Rotary switch selects horn tone and volume — confirm tone selection against system programming before final trim-out. Standard wall box mounting; no specialized tools required beyond a screwdriver and voltage meter for circuit verification.

What's in the Box

• 1x P4W wall-mount horn strobe unit (white finish)
• 1x universal mounting plate with shorting spring
• 1x mounting screws and anchors