System Sensor 2400TH

Photo Detector with Fixed Heat Sensor, 2-wire, 12/24 VDC

Condition: New
Brand: System Sensor
Status: Obsolete
SKU: 10610
Manufacturer Part #: 2400TH
Replacement: 2WT-B


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.

Additional information

Weight 0.5 lbs
Dimensions 3.20 × 3.20 × 5.50 in
Detection Method

Fixed Temperature, Photoelectric

Thermal Rating



Production Status




  • 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


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