L-Series 2-Wire Sounder + Strobe

Product Overview

The L-Series 2-Wire Sounder + Strobe (P2WL-P) is a conventional (dc-operated) audible and visual alarm device intended to alert building occupants of emergency situations. There is no "FIRE" labels on this sounder strobe device.

The P2WL-P provides seven field-configurable brightness settings. These settings are controlled by a switch on the back of the unit.

A rotary switch on the rear of the unit allows field selection of the audible alarm signal and volume. Four audible alarm signals and two volume settings are available.

The mounting plate has a shorting spring that provides wiring continuity before devices are installed. This enables installers to verify the wiring without installing the device. The device need not be installed until late in the construction process, reducing the risk of damage.


  • Plug-in design with minimal intrusion into the back box
  • Field-selectable brightness settings: 15, 30, 75, 95, 110, 135, and 185 candela
  • Brightness setting indicator on the front of unit
  • Four field-selectable audible alarm tones including ISO 8201 Temporal 3 pattern (½ second on, ½ second off, ½ second on, ½ second off, ½ second on, 1½ off and repeat)
  • Sound output: 88 dBa on 24 Vdc systems
  • Two field-selectable audible alarm volume settings
  • Designed for use in 12 Vdc, 24 Vdc, or 24 V FWR (full wave rectified) systems
  • Mounting plate shorting spring allows wiring continuity check before device installation
  • Tamper-resistant construction
  • This device broadcasts an audible alarm signal and flashes when provided with a DC power supply of correct voltage and polarity
  • Compatible with Pertronic fire alarm control panel External Bell outputs
  • Electrically compatible with legacy SpectrAlert and SpectAlert Advance devices
  • UL listed to
    • UL 464, "Audible Signaling Devices for Fire Alarm and Signaling Systems, Including Accessories" (public mode)
    • UL 1638, "Visible Signaling Devices for Fire Alarm and Signaling Systems, Including Accessories" (public mode)

Note: The product is not able to broadcast a verbal alarm signal.

Ordering Information

Product Code



L-Series 2 Wire Sounder + Strobe with no Fire Label, White