790MRL Heat Alarm

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790MRL Heat Alarm

Key Features

  • Advanced Class A2 thermistor sensing technology.
  • 230V mains powered.
  • Battery back-up:
  • MRL – 10 year sealed for life rechargeable lithium battery.
  • Hardwire interconnect with up to 12 units of a similar type.
  • Compatible with wireless interlink base.
  • Supplied with PUSH-FIT mounting base.
  • Central test and silence button.

Manual Datasheet

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The 790MRL heat alarm is mains powered with rechargeable lithium battery back-up and a PUSH-FIT docking base system; designed to ensure quick and easy installation of base unit to the mains feed supply at installation stage (1st fix) and for quick and easy connection of alarm to base unit (2nd fix). The PUSH-FIT base provides spacious room for wiring in premises such as flats where concrete ceilings can be problematic. Top and side entries accommodate for either cable or mini trunking installations.

The PUSH-FIT base can also be used with 230V smoke and heat alarms in the 660, 670 & 690 series and up to 12 compatible smoke and heat alarms can be linked for simultaneous warning.

Technical Specification

Dimensions 140mm (diameter) x 68mm (depth)
Product Code 790 MRL
Supply voltage 230V AC, 50Hz
Battery back-up Rechargeable lithium battery
Technology Advanced Thermistor
Alarm sound level 85dB(A) at 3m (minimum)
Installation positions Ceiling
Alarms at temperature range +54°C to +70°C
Operating temperature +5°C to +38°C
Operating humidity 10% to 85% relative
Storage temperature +5°C to +38°C
Storage humidity 10% to 85% relative
Plastic material ABS, UL94 VO fire retardant
Warranty 5 years
Master pack quantity 10
Weight 340g
Certified to BS 5446-2: 2003
Independently tested to N/A
Max number of connected units 12 hardwired units

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