Alarm Systems Electrical Cables
Steel Wire Armoured Cables - BS5467 - PVC Steel Wire Armoured Cables - BS6724 - LSZH 6941AX/AB Single Core AWA Cables - PVC & LSZH 6491X H07V-R Cables - BS EN 50525-2-3 - PVC 6491B HO7Z-R Cables - BS EN 50525-3-41 - LSZH NYY-J Cables - IEC60502-1 - PVC N2XH Cables - BS EN / IEC 60332-3-24 (c) - LSZH ConnectEV Electric Vehicle Power & CAT5e Cable EV-Ultra Electric Vehicle Power & CAT5e Cable Bare Soft Drawn Copper Cables Bare Hard Drawn Copper Cables 6181Y Double Insulated ( Meter Tails ) Cables - BS6004 - PVC 6242 / 6243 Twin & Earth Cables - BS6004 - PVC 6181B Double Insulated ( Meter Tails ) Cables - BS7211 & BS8573 / IEC60502 - LSZH 6242 / 6243 Twin & Earth Cables - BS7211- LSZH 218*Y H03VV-F Flexible Cord 219*Y PVC Oval Flat Flexible Cables - BS6500 318*Y Flex Cables - H05VV-F - PVC 3093 / 3094 & 3095 PVC Heat Resistant Flexible Cables - BS EN 50265 318*B Flex Cables - HO5Z1Z1-F - LSZH Arctic Grade Flexible Cables - BS6004 - Table 44 Solar Cables - TUV Approved PV-Ultra Solar Cable Fire Alarm & Security Cables - BS5839/BS7629 Fire Alarm & Security Cables - Enhanced - BS5839 / BS7629 6491F Single Core Fireproof Cables Fireproof Mains & Control Cables - LSZH Fireproof Mains Cables - LSZH Fireproof Mains & Control Cables - Enhanced - LSZH Fireproof Mains Cables - Enhanced - LSZH 318* Tough Rubber Flex Cords H07RN-F Flex Mains & Control Cables - EPR H07ZZ-F Flex Mains & Control Cables - LSZH TQ Flexible Cables - EPR / CSP Type 4 Coil End Lead Cable 0361TQ Welding Cable - BS638 Part 4 YY Control Cables - BS50525-2-11 - PVC YY Control Cables - BS50525-2-11 - LSZH SY Control Cables - BS50525-2-11 - PVC SY Control Cables - BS50525-2-11 - LSZH CY Control Cables - BS50525-2-11 - PVC CY Control Cables - BS50525-2-11 - LSZH BS8436 Protected Fixed Wiring Cable Tri Rated Cables - BS6231 2491B / 6701B Cables - LSZH NYMJ Cables NHXMHJ Cables Security Alarm Cables Belden Equivalent Cables UTP/FTP CAT5E/CAT6 Data Cables Internal Telephone Cables - BS4066 Coaxial Cables Bell Wire & Speaker Cables Defence Standard 61-12 Control Cables KNX Cables ENATS 09-6 Communications & Telephone Cables BS5308 Instrumentation Cables 6381Y DC Cables - PVC 6381B DC Cables - LSZH 6181X Mains & Cathodic Cables - BS7889/97 - PVC 6941X Armoured Cathodic Protection Cables - PVC Induction Loop Detector Cable - BS6500 / BS6195 Steel Wire Armoured Cables - Aluminium - BS5467 - PVC DNO Concentric Cables - Split & Straight DNO Waveform Cable DNO 11KV Cable 11kV Armoured Mains Cable - Single Core - LSZH 11kV Armoured Mains Cable - 3 Core - PVC 11kV Armoured Mains Cable - 3 Core - LSZH 657*TQ Marine & Offshore Cables 658*TQ Marine & Offshore Cables XAI Marine Cables
Cable Accessories & Components Cable Management Lamps & Lighting LED Heating & Hand Dryers Site Equipment Switchgear & Control Switches & Sockets Ventilation Fans & Ducting Wiring Accessories & Consumables
01642 266013
0800 652 9229
Order and Helpline open now
Prices Ex. VAT Prices Inc. VAT
Free Delivery On orders over £50 to UK mainland
postcodes. Click to see exceptions.
Place Your Order before 2.30pm for same day dispatch Mon-Fri
Open 8.30am-5pm Mon-Fri, 8am-12pm Sat
Click & Collect Available from our Middlesbrough depot Cable Size Calculator Step by step size selector

Kidde K4MCO Mains Powered Carbon Monoxide Alarm

£44.50EX. VAT
£53.40INC. VAT
In Stock
Order before 2.30pm for same day dispatch*
Order now to collect from our Middlesbrough Depot in 2 hours time*


The Kidde K4MCO is a 230V mains Carbon Monoxide Detector with a sealed lithium-ion battery backup, 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 landlord's responsibility to have installed in all residential premises, warning against the deadly gas known as carbon monoxide and also providing 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.

The 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 K4MCO can be linked up with 24 other Kidde and Firex mains devices (of which 18 can be initiated) including smoke, CO, and heat alarms.

Key features of the K4MCO 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-ionized 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

7-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.

Quantity Price Inc. VAT Price Ex. VAT
1 - 2 £53.40 £44.50
3 - 9 £53.28 £44.40
10 - 999 £53.10 £44.25
Superlec Code K4MCO
Power Type Mains
Kidde K4MCO Datasheet

Often Bought With:

Kidde PATCO Surface Pattress to Fit K4MCO Carbon Monoxide Alarm Only £2.34 Inc. VAT £1.95 Ex. VAT Only £1.95 Ex. VAT £2.34 Inc. VAT