Gentex 8240T

Photoelectric System Smoke Detector, 24VDC, Integral 135°F Thermal

Condition: New
Brand: Gentex
Status: Obsolete
SKU: 8804
Manufacturer Part #: 8240T
Secondary Part #: 908-1203-002


The Gentex 8000/8003 Series of photoelectric smoke detectors are designed for commercial, industrial, residential and institutional applications. The 8000/8003 is engineered to provide outstanding performance wherever reliable fire protection is required.

The Gentex 8000/8003 Series provides an exclusive patented three position test feature that simulates a 0.85% and a 3.5% actual smoke condition. The test feature has the capability to let you know when maintenance is required.

Additional information

Weight 0.4 lbs
Dimensions 2.625 × 5.75 × 5.75 in

Gentex Corporation



Detection Method

Fixed Temperature, Photoelectric

Thermal Rating


Production Status




  • Available in 120 VAC and 24 VDC
  • Photoelectric smoke sensing technology
  • Listed for releasing device service
  • Form A/Form C dry relay contacts
  • Horn frequency 3100 Hz (nominal)
  • Temporal 3 evacuation sounding device (8003 Series)
  • Nominal 2.5% sensitivity
  • Patented three-position test switch
  • Quick-disconnect wiring harness
  • 5-to-1 signal-to-noise ratio
  • Pulsing LED sensing chamber
  • Fully insect screened
  • Easy Wash® on-site maintenance washing program
  • Solid-state LED condition indicator
  • Mounting hardware adapts to standard junction boxes
  • Dust cover to prevent contamination during installation
  • Protective high air velocity gasket
  • Two year warranty from date of purchase


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8000 / 8003 Series; Photoelectric System Smoke Detector


Gentex - Data Sheet

Discontinuation Note


Gentex - Technical Bulletin