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Mains Heat Alarm with Sealed Self-Charging Lithium Battery Backup - Firehawk FHN450RB

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£35.63 inc VAT
£29.69 ex VAT
Product Overview

The Firehawk FHN450RB is a mains powered heat alarm with a sealed self-charging lithium back-up battery. Specifically designed technology such as the Advanced Thermistor Detection, improves the sensor performance. The Fast-Fix base allows for the alarm to be simply clicked into place, where it is connecting to the power supply and interlink cable to ensure that maintenance and replacements are quick and easy. Heat alarms are suitable for installation in kitchens, garages, unoccupied lofts and areas which would suffer from frequent nuisance alarms caused by dust or fumes. For extra peace of mind, the Firehawk FHN450RB comes with a 10 year warranty.

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 FHN450RB mains powered optical 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


Model Description Power Interlink
FHN600Remote Battery Powered Wireless Remote Control 1x CR2025 Coin Cell IR (infrared)

Technical Data
Product Code FIFHN450RB
Alternative Product Codes FHN450RB
Brand Firehawk
Battery Type

Sealed Self-Charging Lithium

Dimensions (HxDia)

69 x 113mm

Operating Temperature

0°C to 40°C

Relative Humidity

< 85%

Sound Output


Storage Temperature

5°C to 30°C


10 Years

Weight 0.20kg
Product Datasheets

Key Product Features

Interlink up to 15 alarms in the same system - FHN250 smoke alarms and FHN450 heat alarms

Fast-Fix Hinge allows heat and smoke alarms to be interchanged

Large test & hush button for easy testing, maintenance and silencing

10 years manufacturer's warranty

Pricing & Availability

Model Stock Price
Product Code: FIFHN450RB Stock Level:
More than 20 in stock Expected dispatch: Today

£35.63 inc VAT

£29.69 ex VAT

Delivery Options

The following delivery options are available on this product.

Standard Delivery

£3.19 inc VAT - Orders will be delivered in 2-3 working days with Evri

Next Working Day Delivery

£6.19 inc VAT - Orders will be delivered the next working day with Evri

For dispatch today order within

Excellent Warranty

This product is supplied with a 10 year manufacturers warranty as standard

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

Direct Telephone 01507 464181


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