Honeywell CO Gas Alarm w/ Battery Back Up Relay

Honeywell CO Gas Alarm w/ Battery Back Up Relay


£77.99 inc VAT

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Honeywell SF340F (Hardwired CO Alarm with Battery Back Up Relay & Interconnect)

Honeywell CO Gas Alarm w/ Battery Back Up Relay


£77.99 inc VAT

Honeywell CO Gas Alarm w/ Battery Back Up Relay & Interconnect

Designed for use in all domestic and light commercial situations, this Honeywell CO Gas Alarm is a reliable way to detect carbon dioxide in the atmosphere.

This hard-wired device uses advanced ECO-Sure electrochemical cell sensing technology, and comes with a battery backup to up to five years to ensure the unit is operational in all circumstances.

Its innovative design ensures maintenance costs are low, with a just a clip-in module to change once every five years.

Key Features

  • Unique 5 year module replacement system.
  • Up to 5 years battery backup.
  • Low maintenance and low cost of ownership.
  • Secure installation.
  • Easy integration within existing systems.
  • Interconnect and relay output.
  • Tested and calibrated in Carbon Monoxide.
  • No re-wiring or main unit replacement costs.
  • 5 year warranty.

Compatible Gas Types

Click here to find out what other gas detectors, spares & accessories we have to offer; also check out our handy blog article on The Origin of Portable Gas Detectors.


Detection PrincipleElectrochemical cell
Operating Voltage230Vac or 12/24Vdc
Backup Battery9Vdc pp3
Power Consumption<2.5W
Main Unit LifeNo replacement required (10 year guarantee)
Module Life5 years (guaranteed)
Module Replacement WarningDouble buzzer chirp every minute
Alarm IndicationBuzzer and flashing red light
Buzzer Output85 decibels (dB) at 3m
Operating Temperature Range-5 to +40°C
Alarm Levels: (BS7860: 1996)150ppm, between 10 to 30 minutes, 350ppm within 6 minutes
Weight575g approx.
Dimensions170 x 110 x 65mm
Test FacilityYes
Relay Output FittedSF340F and SF340J
Models AvailableSF340E – 230Vac,
SF340F – 230Vac + relay + interconnect
SF340J – 12/24Vdc + relay + interconnect

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