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Mains Powered Radio-Interlinked Heat Alarm with Lithium Back-up - BRK 790RF

Discontinued Product

This product has been discontinued.

Product Overview

Fitted with a sealed lithium back-up battery, the BRK 790RF is a mains powered radio-interlinked heat alarm designed for kitchen areas and garages. The radio-frequency base plate supplied with the heat alarm enables the unit to wirelessly interlink with multiple smoke and heat alarms within the same system, providing the earliest possible warning of fire. If one alarm is activated it will send a wireless signal to all other interlinked alarms, causing them to also sound.

  • 230V mains powered with sealed lithium back-up battery (included)
  • Kitemarked to BS 5446-2
  • Suitable for installations complying with BS 5839-6: 2019 Grade D1
  • Consists of a BRK 790MRL heat alarm and a radio-frequency base plate
  • Wireless interlinking - requires no cables between units
  • Up to 50 RF smoke and heat alarms can be interlinked within a single system
  • Suitable for kitchens and garages
  • Detects rapid increase in room temperature
  • Test button facility
  • Radio-frequency range: 150m in free space, 30m in buildings
  • 5 year manufacturer's warranty
Technical Data
Product Code BK790RF
Alternative Product Codes BK790RF, 790RF, 790
Brand BRK
Back-Up Battery

Self-charging Lithium Battery

Dimensions (HxDia)

Heat Alarm: 68x140mm

RF Base: 30x140mm

Operating Temperature

+5°C to +38°C

Relative Humidity

10% to 85%

Sound Output

85dB

Warranty

5 Years

Weight 0.51kg
Product Datasheets
FAQs (7)
Q. I want to install an interlinked smoke alarm system throughout my home, but what type of smoke alarms do I need in different rooms?
A.

We recommend a heat alarm in the kitchen, optical alarms in living rooms and hallway and ionisation alarms on landings.

Q. What sort of smoke alarm system would I need to install for a HMO?
A.

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.

Q. Can a smoke alarm be fitted with a sticky adhesive pad in a let property?
A.

The sticky pad is suitable for all battery operated smoke alarms. However, we cannot judge if battery alarms are suitable for your let property, as let properties usually require mains powered alarms. There is some advice to this in the governments guides to fire risk assessments. http://www.safelincs.co.uk/Fire-Risk-Assessment/ Also see the LACoRS guide for let properties.

Q. Do I need to take out all the batteries in my radio-interlinked alarms before adding a new alarm into the system?
A.

No, you do not need to remove all the batteries. Just simply press the house code button on all the units. Please ensure that the batteries have full power as this could render the house code process incomplete.

Q. is there a different alarm sound for optical and heat sensors to tell you the difference in what kind of fire it is?
A.

There is only one alarm sound type when a fire is detected, when interconnected all smoke and heat alarms will sound. However only the triggered alarm will have a rapidly flashing red indicator.

Q. If the radio interlinking signal on one unit fails will the units still work as stand alone units.
A.

Yes, should the radio interlinking signal fail the units will continue to sound independently should they detect a fire.

Q. My ceiling light is on a dimmer switch. Can I still power my radio-interlinked mains smoke alarms from this lighting supply?
A.

In modern housing the lighting circuit will travel around your house with the lights being fed from it. Between the circuit and the light will be a switch (or in this case a dimmer) which will control the light. Your mains powered alarms are connected directly to the circuit and have constant power, so are not affected by switches or dimmers. In older homes that have not had the electrics updated this may not be the case so it is advisable to consult an electrician.

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