Mains Heat Alarm with Alkaline Battery Backup - Firehawk FHN450BB
The FHN450BB mains powered heat alarm from Firehawk is supplied with easy-to-replace AAA alkaline back-up batteries. With Advanced Thermistor Detection to assist with heat detection, the FHN450BB is perfect for kitchens, garages and lofts. A chirp to indicate low batteries can be silenced with the test and hush button for up to 10 hours, ensuring that your household can remain undisturbed during the night while still being alerted in the event of a fire. The allows smoke and heat alarms in the same range to be swapped over if needed.
- Power: 230V mains powered with back-up battery
- Back-up: 3 x AAA alkaline batteries (supplied)
- Warranty: 6 years manufacturer's warranty
- Hardwire interlink up to 12 FHN450 heat alarms and FHN250 smoke alarms in the same system
- makes this alarm suitable for the kitchen, garage, loft or workshop
- Ideal for locations where smoke alarms can be falsely triggered by normal household fumes and vapours
- Fast-Fix base allows quick installation and swapping of smoke and heat alarms on the same base
- Push-Fit for additional safety when removing and replacing the alarm head
- Low back-up battery warning chirp can be silenced for up to 10 hours
- Large test and silence button for easy testing, maintenance and silencing
- Suitable for installations complying to Grade D2
- UKCA marked, CE marked, and Kitemarked to
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 |
| Back-Up Battery Type | Alkaline |
| Battery Type | AAA Batteries |
| British Standard Grade | Grade D2: Mains Powered (replaceable backup) |
| Colour | White |
| Local Legislation | Scottish Legislation (2022) |
| Welsh Legislation (2022) | |
| Northern Ireland Legislation (2024) | |
| Approvals & Markings | CE Marked |
| Compliance | BS 5446-2: 2003 |
| BS 5839-6 | |
| Connection | Wired |
| Display | LED Indicators |
| Fixing Options | Screws (included) |
| Installation Position | Ceiling |
| 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 |
| Relative Humidity | Less Than 85% |
| Recyclable | Yes - Valpak's WEEE Distributor Take-back Scheme |
| 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 |