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Mains Powered 3 Smoke Alarms and 1 Heat Alarm Kit with Alkaline Back-up Batteries - Firehawk

Firehawk Fnh250Bb Mains Alkaline Battery Smoke Alarm Contents
Customer Reviews

Available to Order

Estimated dispatch: Thursday 30th July
£78.84 inc VAT

£71.30 inc VAT

£59.42 ex VAT

Standard Delivery

Will usually be delivered in 12-17 working days

£4.20 inc VAT

Expedited Delivery

Will usually be delivered in 11-15 working days

£7.00 inc VAT

This Firehawk mains-powered fire alarm kit contains 3 smoke alarms and 1 heat alarm, each featuring replaceable AAA battery backup to provide dependable Grade D2 fire protection. The alarms can be hardwired and interlinked with up to 12 compatible Firehawk FHN devices, ensuring that when one alarm is activated, all connected alarms sound simultaneously to deliver early fire warning throughout the property.

  • Power: 230V mains powered with alkaline battery backup
  • Back-up Battery: 3 x AAA alkaline batteries (supplied)
  • Warranty: 6-year manufacturer's warranty
  • Smoke Alarms
    • Suitable for hallways, landings, lounges, and bedrooms
    • CE marked and Kitemarked to BS EN 14604: 2005
    • X-Profile sensing chamber helps minimise false alarms, while TSE Technology enhances smoke detection performance
  • Heat Alarms
    • Suitable for kitchens, garages, and unconverted loft areas
    • CE marked, UKCA marked, and Kitemarked to BS 5446-2: 2003
    • Advanced Thermistor Detection technology provides enhanced fire detection capability
  • Designed for installations meeting BS 5839-6: 2019 Grade D2 requirements
  • Expand the system at any time with additional compatible smoke and heat alarms, up to a maximum of 12 devices
  • Fast-Fix mounting bases allow for quick installation and straightforward alarm replacement
  • Large combined test and hush button enables simple weekly testing and maintenance
  • Low battery alerts and end-of-life warning chirps can be muted for up to 10 hours
  • Complies with Scottish 2022, Welsh Landlord 2022, and Northern Ireland Landlord 2024 fire safety legislation

Please Note: these FHN series alarms are not compatible with the older FH models.

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Technical Data

Technical Data

Firehawk FHN250BB Mains Smoke Alarm With Alkaline Backup

Product Code FIFHN250BB
Brand Firehawk
Manufacturer's Part Number FHN250BB
Approvals & Markings CE Marked
UKCA Marked
Back-Up Battery Type Alkaline
Battery Type AAA Batteries
British Standard Grade Grade D2: Mains Powered (replaceable backup)
Colour White
Compliance BS 5839-6
BS EN 14604: 2005
Connection Wired
Display LED Indicators
Environmental Suitability Indoors
Fixing Options Screws (included)
Installation Position Ceiling
Local Legislation Scottish Legislation (2022)
Welsh Legislation (2022)
Material Plastic
Maximum Number of Linked Devices 12 Devices
Operating Temperature 0°C To +40°C
Positioning Bedrooms
Hallways
Landings
Living Rooms
Power Type Mains Powered (230V)
Product Range FireHawk FHN Series
Recyclable Yes - Valpak's WEEE Distributor Take-back Scheme
Relative Humidity Less Than 85%
Sensor Type Optical
Sound Level 85dB
Suitability Home
Warning Type Audible - Alarm Sounder
Warranty 6 Years
Dimensions (Unit)
  • Depth: 55mm
  • Diameter: 113mm
Weight 196g
Datasheets

Firehawk FHN450BB Mains Heat Alarm With Alkaline Backup

Product Code FIFHN450BB
Brand Firehawk
Manufacturer's Part Number FHN450BB
Approvals & Markings CE Marked
Back-Up Battery Type Alkaline
Battery Type AAA Batteries
British Standard Grade Grade D2: Mains Powered (replaceable backup)
Colour White
Compliance BS 5446-2: 2003
BS 5839-6
Connection Wired
Display LED Indicators
Fixing Options Screws (included)
Installation Position Ceiling
Local Legislation Scottish Legislation (2022)
Welsh Legislation (2022)
Northern Ireland Legislation (2024)
Material Plastic
Maximum Number of Linked Devices 14 Devices
Operating Temperature 0°C To +40°C
Positioning Garages
Kitchens
Unconverted Loft Spaces
Power Type Mains Powered (230V)
Product Range FireHawk FHN Series
Recyclable Yes - Valpak's WEEE Distributor Take-back Scheme
Relative Humidity Less Than 85%
Sensor Type Heat
Sound Level 85dB
Suitability Home
Warning Type Audible - Alarm Sounder
Warranty 6 Years
Dimensions (Unit)
  • Depth: 69mm
  • Diameter: 113mm
Weight 180g
Datasheets
Interlink

Interlink

Product Code Description Sensor Type
FHN250BB Mains Powered with Alkaline Back-Up Battery Optical Smoke
FHN250RB Mains Powered with Sealed Lithium Back-Up Battery Optical Smoke
FHN450BB Mains Powered with Alkaline Back-Up Battery Heat
FHN450RB Mains Powered with Sealed Lithium Back-Up Battery Heat