Firehawk FHN450BB Mains Heat Alarm with Alkaline Battery Backup
The Firehawk FHN450BB is a mains-operated heat alarm equipped with a replaceable alkaline backup battery, providing uninterrupted fire detection even if the power supply is lost. It also features a Fast-Fix base for quick and easy installation or replacement with a simple click-in design.
- Suitable for kitchens, garages, and unconverted loft spaces
- Power: 230V mains powered with back-up battery
- Back-up: 3 x AAA Alkaline back-up battery
- Warranty: 6-year manufacturer’s warranty
- Hardwire up to 12 compatible Firehawk FHN smoke and heat alarms
- Improved fire detection with Advanced Thermistor Detection
- When one alarm has activated, all other interlinked alarms will sound
- Discreet and easy installation with a Fast-Fix base
- Large test button for easy testing and maintenance
- End-of-life warning can be silenced up to 10 hours
- Compliant with BS 5839-6 Grade D2 installations
- CE and UKCA marked
- Approved to BS 5446-2: 2003
Please Note: these FHN series alarms are not compatible with the older FH models.
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Review this product nowTechnical Data
| 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) |
|
| Weight | 180g |
| Datasheets |
Interlink
The table below shows all alarms which can interlink via cable with the Firehawk FHN450B mains powered smoke alarm.
Please Note: these FHN series alarms are not compatible with the older FH models.
Mains-Powered Alarms
| Model | Description | Battery Backup | Interlink |
|---|---|---|---|
| FHN250BB | Mains Powered Optical Smoke Alarm | 3x AAA Alkaline (included) | Hardwire |
| FHN450BB | Mains Powered Heat Alarm | 3x AAA Alkaline (included) | Hardwire |
| FHN250RB | Mains Powered Optical Smoke Alarm | 10 Year Sealed Lithium | Hardwire |
| FHN450RB | Mains Powered Heat Alarm | 10 Year Sealed Lithium | Hardwire |