Using advanced heat sensing technology (also called Thermistek), the FireAngel WHT637 radio-interlinked heat alarm reacts quickly when significant rate-of-rise in temperature is detected. Ideal for areas where a smoke alarm could be prone to false triggering, e.g. kitchen or garage, the WHT637 is capable of wirelessly interlinking with up to 50 alarms using radio-frequency signal. Enabling all interlinked alarms to sound if one detects a fire, a wireless smoke and heat alarm system within the home would ensure you receive the earliest possible warning of fire.
Exclusive Extras from Safelincs
The FireAngel WHT637 Heat Alarm Kits are supplied as standard with some exclusive extras that make purchasing these alarms easier and more cost-effective, including:
We recommend testing alarms by pressing the test button built-in to the unit, as this is designed to simulate the detection of the target stimuli (usually smoke, heat, or CO) at the alarm sensor. You should test your alarms regularly to ensure they are protecting building occupants, preferably every week. For more detailed guidance, check the manual included with your alarm.
Q. Are there any restrictions to the distance a radio-interlinked smoke alarm will work?
Most radio-interlinked alarms have a range of 150 meters in an open space and up to 30 meters in buildings. The thickness of the walls and partitions will affect the travel distance of the signal.
Q. How long do smoke alarms last before needing replacement?
It is recommended that smoke alarms are replaced after 10 years. This is because the sensors in the smoke alarms become less sensitive and may not activate when a fire is present.
Q. Do batteries in radio-interlinked alarms expire quicker than those in normal alarms?
Batteries in radio-interlinked alarms do expire quicker than in other smoke alarms. RF smoke alarms are, however, also available with a 10 year sealed long life lithium battery. This battery will last for the 10 year life of the smoke alarm.
Q. What sort of smoke alarm system would I need to install for a HMO?
BS 5839-6 recommends that one or two storey HMOs with an individual floor area of no more than 200sqm (not the total of both floors) should have a Grade D smoke alarm system installed. Grade D refers to mains powered smoke alarms with a back up battery power supply. The alarms can be interlinked either by wire or by radio signal and the system does not require a separate fire alarm panel. For HMOs of 3 storey or higher, a Grade A panel system would need to be installed. This can cover the whole of the building, or can be used just for the communal areas with a separate Grade D system installed for the individual dwellings. For both applications, the level of cover should be a minimum of LD3 (in all escape routes) but this may change according to the fire risk assessment.