Mains Powered Optical Smoke Alarm (Rechargeable battery back-up)


Mains powered optical smoke alarm with rechargeable lithium cell back-up.

  • Unique X-Profile detection chamber controlled by bespoke software.
  • TSE-Technology (Thermal Stability Enhancement) provides stability across a range of environmental conditions, reducing nuisance alarms whilst enhancing detection
  • Using Push-Fit Connectors and our detachable detector head, our Fast-Fix design allows fast and trouble free installation.
  • Alarm Silence Button ideal in non-emergency situations (nuisance alarms)
  • Silence Low Battery Warning for up to 10 hours. Maintains continuous protection during sleeping hours
  • Extra large Test Button for ease of use
  • Interlinkable to up to 14 other FH250 smoke or FH450 heat alarms
  • Green led indicates power, constantly flashing red led indicates alarm condition
  • Operation voltage: 230v AC 11w




WARNING: Experience has shown that children may not be woken by fire alarm tones.  It is important that children are never left alone in a house. Families should have a fire escape plan that is rehearsed, so that everyone knows how to escape when fire occurs. The immediate priority when fire occurs is to ensure that any sleeping children are woken from sleep and are immediately taken to a place of safety outside the property, along with all other occupants. The fire and rescue service should always be called without delay, no matter how small the fire.

Additional Information
Weight 0.24 kg
Dimensions 8.7 × 3.8 cm
Master pack


Master pack dimensions

33.5D x 13H x 25W cm

Master pack weight



10 Years


BS EN14604 : 2005