Mains Powered Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - Firehawk RB Series
The Firehawk FHN250RB smoke alarm and FHN450RB heat alarm are reliable mains powered fire detection devices designed to provide comprehensive protection throughout the home. Featuring a sealed, self charging lithium backup battery, they ensure continuous operation even during power outages, while advanced sensing technology helps reduce false alarms and improve detection performance.
- 230V mains powered alarms with 10-year sealed lithium battery backup
- Available in two versions:
- FHN250RB optical smoke alarm – suitable for most rooms including hallways, landings, living rooms, and bedrooms
- FHN450RB heat alarm – suitable for rooms likely to have steam, dust, or fumes like kitchens and garages
- 10 year manufacturer's warranty
- Self charging backup battery provides protection during power failures
- Also available with replaceable alkaline back-up batteries
- Interlink up to 15 alarms enabling all units to sound when one detects danger
- Advanced sensor technology reduces nuisance alarms and improves performance
- Fast Fix base for quick installation and easy replacement of alarm heads
- Large test and hush button for simple maintenance and control
- End of life warning with temporary silence option
- CE marked and certified to:
- (smoke alarm)
- (heat alarm)
- Fully compliant with BS 5839 6 Grade D1 standards
- Suitable for 2022 Scottish Legislation for fire alarms in homes
Please Note: The FHN model is not compatible with the older FH models.
Customer Reviews (5)
Reviews by Real Customers
All of our product reviews are written by real customers that have purchased this product from us and are published without modification.
Reviewed by
K C
Published on
17th November 2023
Reviewed by
G S
Published on
20th October 2023
Work well and look neat & tidy
Used the Firehawks to replace my old mains BRK alarms and whilst the new ones work well and look good (as far as alarms do) the fixings are different but with a bit of juggling I managed to fit them on the old base and wire them into it so I didn't have to remove the old base plates to leave gaps in the paintwork or re-do the wiring from scratch. It would be a good area for standardisation if manufacturers could agree on a common baseplate and connector for mains alarms it would make life easier.
Reviewed by
J H
Published on
29th July 2023
Neat,long backup battery life and quickly fitted.
very happy with my purchase.
Reviewed by
J H
Published on
29th July 2023
Neat, long backup battery life and quickly fitted.
very happy with my purchase.
Reviewed by
E G
Published on
6th April 2023
Excellent advice and service goods arrived quickly
Technical Data
| Product Code | FIFHN250RB |
|---|---|
| Brand | Firehawk |
| Manufacturer's Part Number | FHN250RB |
| Approvals & Markings | CE Marked |
| UKCA Marked | |
| Back-Up Battery Type | Rechargeable Lithium |
| British Standard Grade | Grade D1: Mains Powered (10 year longlife 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 | Indoor |
| Warning Type | Audible - Alarm Sounder |
| Warranty | 10 Years |
| Dimensions (Unit) |
|
| Weight | 168g |
| Datasheets |
Interlink
Please Note: these FHN series alarms are not compatible with the older FH models.
| Product Code | Description | Interlink Type |
| FIFHN250BB | Mains Smoke Alarm with Alkaline Battery Backup | Hardwire Interlink |
| FIFHN450BB | Mains Heat Alarm with Alkaline Battery Backup | Hardwire Interlink |
| FIFHN250RB | Mains Smoke Alarm with Lithium Battery Backup | Hardwire Interlink |
| FIFHN450RB | Mains Heat Alarm with Lithium Battery Backup | Hardwire Interlink |
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Easy to fit, working ok so far
Applies to option(s): Smoke Alarm