Kidde MAINS CARBON MONOXIDE DETECTOR - 4MCO
REF: 4MCO
£34.95 ex. VAT
( £41.94 inc. VAT )

The Kidde 4MCO is a 230V mains Carbon Monoxide Detector with sealed in lithium-ion battery back-up, ideal for major refurbishments in existing properties, projects requiring complete re-wiring or new build installations.
CO detectors are now a requirement by law and a landlords responsibility to have installed in all residential premises, warning against the deadly gas known as carbon monoxide and also providing a continuous monitoring of CO levels around the home.
CO detectors should be located on each level of the home, ideally close to fuel burning appliances and also sleeping areas.
Main sources of carbon monoxide are:
Clogged chimneys
Cracked or loose boiler flue
Improperly installed gas cooker, hob or hood
Corroded or disconnected water heater vent pipe
Gas or wood burning fireplaces
Portable paraffin or gas heaters
The 4MCO can be linked up with 24 other Kidde and Firex mains devices (of which 18 can be initiating) including smoke, CO and heat alarms.
Key features of the 4MCO are:
Sealed-in rechargeable lithium cell providing 7 years continuous operation in the event of a mains failure
End of life warning after 7 years from initial power up
Sensor - Electrochemical with de-ionised water electrolyte, sampling one every 15 seconds
Button test - Stimulates the effect of CO at the sensor, checking electronics & sounder
Audible / sound output - 85dB at 3 metres
Alarm response:
30PPM - no alarm within 120 minutes
50PPM - must alarm within 60-90 minutes
100PPM - must alarm within 10-40 minutes
300PPM - must alarm within 3 minutes
BSI certified to BS EN50291:2001
6 year warranty
Dimensions – (DIA) 147mm x (D) 42mm
Weight – 350g
** Replacement for the Kidde 423/9HIR **
** Please note – That when replacing an existing Kidde fixture, all parts / accessories will need to be bought as new e.g. new alarm / new base plate **
Compatible with 23 Kidde modules: KF1, KF1R, KF2, KF2R, KF3, KF3R, KF10, KF10LL, KF10R, KF20, KF20LL, KF20R, KF30, KF30LL, KF30R, 4870, 4881, 4973, 4985, 4892, 4899, 1SFW, 1SFWR, 2SFW, 2SFWR, 3SFW, 3SFWR, 4MCO and 4MDCO.
MAINS POWERED CO DETECTOR - REPLACING KIDDE 423/9HIR
The Kidde 4MCO is a 230V mains Carbon Monoxide Detector with sealed in lithium-ion battery back-up, ideal for major refurbishments in existing properties, projects requiring complete re-wiring or new build installations.
CO detectors are now a requirement by law and a landlords responsibility to have installed in all residential premises, warning against the deadly gas known as carbon monoxide and also providing a continuous monitoring of CO levels around the home.
CO detectors should be located on each level of the home, ideally close to fuel burning appliances and also sleeping areas.
Main sources of carbon monoxide are:
Clogged chimneys
Cracked or loose boiler flue
Improperly installed gas cooker, hob or hood
Corroded or disconnected water heater vent pipe
Gas or wood burning fireplaces
Portable paraffin or gas heaters
The 4MCO can be linked up with 24 other Kidde and Firex mains devices (of which 18 can be initiating) including smoke, CO and heat alarms.
Key features of the 4MCO are:
Sealed-in rechargeable lithium cell providing 7 years continuous operation in the event of a mains failure
End of life warning after 7 years from initial power up
Sensor - Electrochemical with de-ionised water electrolyte, sampling one every 15 seconds
Button test - Stimulates the effect of CO at the sensor, checking electronics & sounder
Audible / sound output - 85dB at 3 metres
Alarm response:
30PPM - no alarm within 120 minutes
50PPM - must alarm within 60-90 minutes
100PPM - must alarm within 10-40 minutes
300PPM - must alarm within 3 minutes
BSI certified to BS EN50291:2001
6 year warranty
Dimensions – (DIA) 147mm x (D) 42mm
Weight – 350g
** Replacement for the Kidde 423/9HIR **
** Please note – That when replacing an existing Kidde fixture, all parts / accessories will need to be bought as new e.g. new alarm / new base plate **
Compatible with 23 Kidde modules: KF1, KF1R, KF2, KF2R, KF3, KF3R, KF10, KF10LL, KF10R, KF20, KF20LL, KF20R, KF30, KF30LL, KF30R, 4870, 4881, 4973, 4985, 4892, 4899, 1SFW, 1SFWR, 2SFW, 2SFWR, 3SFW, 3SFWR, 4MCO and 4MDCO.
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