Mains Powered Interconnectable CO Detector - Kidde 4239HIR
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Mains Powered Interconnectable CO Detector - Kidde 4239HIR

Discontinued Product

This product has been discontinued and is no longer available to buy.

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Product Overview
  • Kidde Proprietary Electrochemical sensor technology
  • Mains powered interconnectable carbon monoxide alarm
  • Re-chargeable sealed lithium battery backup
  • Test/Reset button and LED to allow simple verification of alarm operation
  • Loud 85db piercing alarm function
  • Detector alarms from: 30ppm (parts per million) CO gas
  • 6 year warranty
  • End of Life warning signal alerts you when alarm needs replacing!
  • Kitemarked to BS EN 50291:200
  • With base plate for simple installation
  • Dimensions (HxWxD): 147x147x42mm
    Interconnection
    The table below shows all the units that can interconnect with the KE423/9HIR and KE423D/9HIR mains powered CO alarms.

    Kidde Firex Range

    Model Number
    Type of unit
    Type of interconnection
    KE4870 Ionisation Alarm Hard wire interconnection
    KE4881 Ionisation Alarm with Rechargeable Lithium Battery Hard wire interconnection
    KE4973 Optical Alarm Hard wire interconnection
    KE4985 Optical Alarm with Rechargeable Lithium Cell Hard wire interconnection
    KE4892 Heat Alarm Hard wire interconnection
    KE4899 Heat Alarm with Rechargeable Lithium Battery Hard wire interconnection

    Kidde 9HI / HILL Range (Discontinued)

    Model Number
    Type of unit
    Type of interconnection
    KE1239HI Ionisation Alarm with Alkaline Battery Hard wire interconnection
    KE1239HILL Ionisation Alarm with Lithium Battery Hard wire interconnection
    KE2239HI Optical Alarm with Alkaline Battery Hard wire interconnection
    KE2239HILL Optical Alarm with Lithium Battery Hard wire interconnection
    KE3239HI Heat Alarm with Alkaline Battery Hard wire interconnection
    KE3239HILL Heat Alarm with Lithium Battery Hard wire interconnection
    Technical Data

    Technical Data

    This is the technical data for the Mains Powered Interconnectable CO Detector - Kidde 4239HIR.

    Sensitivity 30ppm (parts per million) CO gas
    Visual Display Backlit Digital Display
    Warranty 6 Years
    Dimensions (HxWxD) 147x147x42mm
    Sound Output 85dB (minimum) at 3m
    Temperature Range 4°C to 38°C
    Humidity Range 15% to 95% Relative Humidity
    Power Type Mains Powered

    Product Datasheets

    The following datasheets are available for this product.

    FAQs (1)

    Q. I purchased 4 alarms for my property recently via Safelinc's website. My electrician has installed them over the weekend.

    However we have the following issue:

    When you press the test button on the Carbon monoxide alarm the carbon monxide alarm goes off (but no alarm sound is heard on the other 3 connected smoke alarms).

    This seems strange given that when you test any of the 3 smoke alarms, an alarm sound can be heard on the carbon monoxide alarm.

    Is this meant to be like this?

    The alarm models are:

    1. Carbon Monoxide Firex 4985
    2. Firex Ioisation 4881
    3. Firex Ionisation 4870
    4. Firex Optical 4985

    A. The reason is the relevant British Standard which requires a different alarm sound for CO alarms in comparison to smoke alarms.

    To achieve this, the CO alarm in question has a dual sound capability, meaning that

    - if a smoke alarm is triggered or tested, the CO alarm detects that a smoke alarm has gone off and will activate one of its two internal sounders (sounding like a smoke alarm).

    - if the CO alarm is tested or triggered, only the CO alarm sounds (sounding like a CO alarm). The smoke alarms are in this case not allowed to sound. As said above, this is a stipulation from BSI

    Customer Reviews

    2 customers have rated this product and it has an overall rating of 5 out of 5

    All our reviews are written by real customers that have purchased this product from us and are published without modification.

    5 / 5 Stars

    Reviewed by: -

    Does the job as described

    Published on: 20th September 2013

    5 / 5 Stars

    Reviewed by: -

    Excellent product

    Published on: 29th April 2013

    Related Products

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    An introduction to the range of carbon monoxide alarms

    Play Video
    Run Time: 01:16

    Where to install a carbon monoxide (CO) alarm

    Play Video
    Run Time: 01:26

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