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These Firehawk optical smoke and heat alarms are mains-powered and fitted with sealed self-charging back-up batteries designed to last their full 10 year lifespan without needing to be replaced. Suitable for Grade D1 installations and Scottish regulations, Firehawk FHN250RB optical smoke alarms and FHN450RB heat alarms can interlink in a system of up to 15 alarms to warn all occupants throughout the whole house if one detects a possible fire. The supplied Fast-Fix bases also allow for the easy replacement or swapping of smoke and heat alarm heads from the same range if required. An "end of life" warning chirp will sound when the whole unit needs replacing after 10 years, but this can be silenced for 10 hours in case it starts during the night.
Please Note: these FHN series alarms are not compatible with the older FH models.
The table below shows all alarms which can interlink via cable with the Firehawk FHN250RB and FHN450RB mains powered smoke & heat alarms.
Please Note: these FHN series alarms are not compatible with the older FH models.
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 |
Model | Description | Power | Interlink |
---|---|---|---|
FHN600Remote | Battery Powered Wireless Remote Control | 1x CR2025 Coin Cell | IR (infrared) |
Product Code |
FHN250RB Optical Smoke Alarm: FIFHN250RB FHN450RB Heat Alarm: FIFHN450RB |
---|---|
Brand | Firehawk |
Back-Up Battery | Sealed Self-Charging Lithium |
Dimensions (HxDia) | FHN250RB Smoke: 55 x 113mm FHN450RB Heat: 69 x 113mm |
Operating Temperature | 0°C to 40°C |
Relative Humidity | < 85% |
Storage Temperature | 5°C to 30°C |
Weight | FIFHN250RB: 0.24kg FIFHN450RB: 0.24kg |
Product Datasheets |
The best location to install your smoke alarm is in the centre of the ceiling rather than on the wall.
During a fire, smoke initially rises and then spreads horizontally. Placing the smoke alarm in the centre of your ceiling means that it is closest to all four points of your room. This ensures that you receive the earliest possible warning of a fire.
For more information, read our guide to positioning your smoke alarm and guide to which smoke alarms are best for each room.
Model | Stock | Price |
---|---|---|
FHN250RB Optical Smoke Alarm Product Code: FIFHN250RB |
Stock Level:
Temporarily unavailable
|
Price:
£31.79 inc VAT £26.49 ex VAT |
FHN450RB Heat Alarm Product Code: FIFHN450RB |
Stock Level:
More than 20 in stock Expected dispatch: 25th Nov
|
Price:
£35.63 inc VAT £29.69 ex VAT |
The following delivery options are available on this product.
3 customers have given this product an overall rating of 4.7 out of 5
Rating: 4 / 5 Stars
Reviewed by: K C
Easy to fit, working ok so far
Published on: 17th November 2023
Rating: 5 / 5 Stars
Reviewed by: J H
Neat,long backup battery life and quickly fitted. very happy with my purchase.
Published on: 29th July 2023
Rating: 5 / 5 Stars
Reviewed by: J H
Neat, long backup battery life and quickly fitted. very happy with my purchase.
Published on: 29th July 2023
If you have any questions or would like more information about this product you can ask one of our specialists.
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