Discontinued Products

This section provides information and downloads for discontinued products.
These products are no longer available for new installations.
Spare parts may be available.
Contact us for more information.

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Ionization Detector


1251BPI Ionization detectors incorporate a unique single source, dual chamber design to respond quickly and dependably to a broad range of fires.

Address selection from 1 to 159 on Pertronic F220.


  • Same housing for both photo-electric and ionisation modules
  • Analogue addressable communication
  • Automatic drift compensation
  • Stable communication technique with noise immunity
  • Variable sensitivity to smoke
  • Low standby current
  • Rotary address switches, 1 to 159
  • Detectors per loop: 1 to 99 on F100A and 1 to 159 on F220
  • Dual red indicating LEDs for 360° visibility
  • Optional remote LED accessory
  • Also compatible with Pertronic F100A and F120A


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