System Sensor PC4WL


Ceiling Horn Strobe, 4-Wire, White

Availability: Estimated 6 - 8 Business Days

  • Factory New
Brand: System Sensor Part #: 31936 Categories: , Manufacturer Part #: PC4WL


The System Sensor L-Series offers the most versatile and easy-to-use line of horns, strobes, and horn strobes in the industry with lower current draws and modern aesthetics. With white and red plastic housings, standard and compact devices, and plain, FIRE, and FUEGO-printed devices, System Sensor L-Series can meet virtually any application requirement.


Weight 0.60 lbs
Dimensions 2.47 × 6.83 × 6.83 in


Lens Color






  • Plug-in design with minimal intrusion into the back box
  • Tamper-resistant construction
  • Automatic selection of 12- or 24-volt operation at 15 and 30 candela
  • Field-selectable candela settings on ceiling units: 15, 30, 75, 95, 115, 150, and 177
  • Horn rated at 88+ dBA at 16 volts
  • Rotary switch for horn tone and two volume selections
  • Universal mounting plate for ceiling units
  • Mounting plate shorting spring feature checks wiring continuity before device installation
  • Electrically Compatible with legacy SpectrAlert and SpectrAlert Advance devices
  • Compatible with MDL3 sync module
  • Listed for ceiling mounting only


Indoor Selectable-Output Strobes and Horn Strobes for Ceiling Applications
System Sensor – Data Sheet – 2017
Selectable Output Four-Wire Horn Strobes – Ceiling Mount
System Sensor – Installation and Maintenance Instructions – 2018

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