Fireray ONE, with 4 Prisms


The self-aligning linear smoke detector according to EN54-12 consists of the detector unit and 4 prismatic reflectors. The connection to the loop and the reset are done via the esserbus transponder 808623.40. The detector unit contains the infrared transmitter and receiver and operates at a range of 50 to 120 m when using the prism reflector. The Fireray ONE is mounted high, but at least 0.3 m below the ceiling and its reflector is mounted opposite with the same distance from the ceiling.

Using the control panel integrated into the detector unit, a visible laser is aimed at the prism reflector, and at the touch of a button, the linear smoke detector aligns itself. Everything can be done by one person alone without any special tools. Integrated Light Cancellation Technology™ prevents false alarms that can be generated by sunlight and artificial light sources. Building Movement Tracking™ provides continuous alignment when the building moves or warps due to temperature changes. The device requires a separate power supply.

  • Integrated visible laser and auto-alignment for ultimate ease of alignment
  • Integrated user interface
  • Prevent nuisance alarms with Light Cancellation Technology™ which compensates for sunlight and artificial light sources
  • Building Movement Tracking™ continuously maintains alignment when buildings settle or flex due to temperature variations
  • Contamination Compensation to correct for gradual build-up of dust on optics
  • Clean detectors quickly and easily without affecting alignment

Scope of Delivery:

Detector incl. 4 prisms
Operating voltage
14 ... 36 V DC
Current consumption​
5 mA (33 mA for alignment modes)
5 ... 120 m
Ambient temperature
-20 °C ... 55 °C
Storage temperature
-40 °C ... 85 °C
Rel. humidity
< 93 % (without condensation)
Protection class
IP 55
Weight detector
approx. 0.7 kg
Weight prism
approx. 0.1 kg
Dimensions detector
W: 130 mm H: 181 mm D: 134 mm
Dimensions prism
W: 200 mm H: 200 mm D: 9 mm"
  • 761419 Fireray ONE, Protective cage
  • 761420 Fireray ONE, Heater

Declaration of Performance

DoP Fireray One_F2237_Version: 01.2021 2 MB

Promotional - Product Data Sheets

Fireray One Product Datasheet_Version: 02.2021 572 KB