System Sensor 2400

Photoelectric Detector, 2-wire, 12/24 VDC

  • Factory New
  • Material Obsolete
Brand: System Sensor Part #: 9902 Categories: , Manufacturer Part #: 2400 Tag:


The System Sensor 400 Series photoelectric detectors are specifically designed to meet the stringent performance requirements of industrial and municipal fire detection/alarm systems. The design of these detectors emphasizes ease of installation and field maintenance.

The 400 Series offers 6 different photoelectric detectors with a variety of voltages, wiring configurations, and thermal options.


Weight 0.50 lbs
Dimensions 3.20 × 3.20 × 5.50 in
Detection Method



Production Status



System Sensor

Product Notes

Replacement: System Sensor 2W-B


  • 12 or 24 volt operations
  • Unique optical sensing chamber
  • Removable cover and insect screen for easy cleaning
  • Visible LED blinks in standby, latches on in alarm
  • Sealed against dirt, insects, and back pressure
  • Field sensitivity metering of detector to meet NFPA 72 requirements
  • Twist-on mounting bracket with tamper option
  • SEMS screws for easy wiring
  • 3-year warranty
  • Optional built-in 135°F (57°C) heat sensor

400 Series Direct-Wire Photoelectric Smoke Detector

System Sensor - Data Sheet

2400 and 2400TH Direct Wire Photoelectric Smoke Detectors

System Sensor - Installation Manual

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