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S200 Addressable Photoelectric Smoke/Thermal Detector

The Series 200 photo-thermal detector range delivers a consolidated, reliable, high-quality detector platform with digital communication, suitable for medium-to-large applications with simple installation requirements.

The 22051TE/TEI Photo Thermal detector uses thermal assistance to the core photoelectric smoke detector to give enhanced false alarm immunity and a faster response to a wide range of incipient fires. The plug-in unit combines two separate sensing elements that are managed by embedded software to act as a single unit. In areas where the normal daytime activities may potentially create unwanted alarms, the detector can be programmed to operate in a “heat only” mode, automatically reverting to full photo-thermal operation during unoccupied periods.


  • Two sensor multi-criteria fire detector incorporating photoelectric, and thermal sensing elements
  • Revolutionary chamber offering improved false alarm immunity
  • Includes Series 200 Advanced Digital Protocol
  • Available with or without single pole short circuit isolation with status control through the Series 200 Advanced Protocol (22051TE without isolator / 22051TEI with isolator)
  • EN54 (2000) Part 5-7
  • Tri-colour LED offering red, green and amber colours providing 360° visibility
  • Rotary decade address switches
  • Pure white colour to compliment modern buildings
  • 100% mechanical and electrical backwards compatibility
  • -30°C to +80°C operating temperature range
  • 10% to 93% relative humidity
  • Compatible bases: B500Series