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Battery Powered Carbon Monoxide Alarm - BRK CO4000EN

Discontinued Product

This product has been discontinued.

Product Overview
The CO4000EN is a portable battery powered carbon monoxide alarm that can be easily installed on the wall or placed on a table dependent on preference. Featuring a combined test and silence button with visual LED indicators, this alarm has an easy access battery door to aid battery replacement and is supplied with suitable fixings should you wish to mount the alarm on the wall.
  • Battery powered carbon monoxide alarm
  • Combined test and alarm silence button
  • 5 year manufacturer's warranty
  • Please note that BRK and First Alert are no longer manufacturing new stock for the European Market and while the products may have a 2018/19 manufacturing date they still provide a full 10 year lifespan and full warranty cover from date of purchase
  • CE and Kitemarked to BS EN 50291-1: 2010
  • 2 x AA batteries included
  • Provides a 85dB warning alarm at 1m when triggered
  • Easily installed on the wall or placed on a table
  • Portable making the alarm ideal for home or holiday
  • Visual red LED and alarm indicates the presence of CO
  • Product warranty and life commences from date of purchase
Technical Data
Product Code BKCO4000EN
Alternative Product Codes CO4000EN
Brand BRK
Battery Type

2 x AA alkaline batteries

Dimensions (HxWxD)


Operating Temperature

-10 °C to +40 °C

Relative Humidity

30% to 90%

Sound Output



5 years

Weight 0.18kg
Product Datasheets
FAQs (2)
Q. Can a smoke alarm be fitted with a sticky adhesive pad in a let property?

The sticky pad is suitable for all battery operated smoke alarms. However, we cannot judge if battery alarms are suitable for your let property, as let properties usually require mains powered alarms. There is some advice to this in the governments guides to fire risk assessments.
Also see the LACoRS guide for let properties.

Q. How long do the batteries last in smoke alarms?

The 9V alkaline batteries and AA alkaline batteries generally last 12 to 18 months. Lithium batteries will usually last 5x longer than their alkaline counterparts, achieving around 5 years lifetime. Some lithium cells are also rechargeable, and when used in a mains-powered alarm may last for the entire functional lifespan of the alarm. Newer alarm models may also feature a "sealed" lithium battery. These batteries are specialist components which are designed to not be removed or need replacing by the user, and have been tested by the alarm manufacturer to ensure they last for the lifetime of the alarm.

Please note: the actual lifetime of your batteries depends on how often the alarms are tested or activated, as sounding the alarm draws more power than when the alarms are "waiting" to detect fire. You should also read your alarm's manual to make sure you only use the recommended types and brands of batteries, as failing to follow these instructions may cause the alarm to malfunction, not alerting you in the event of a fire, and might also invalidate the warranty.

Excellent Warranty

This product is supplied with a 5 year manufacturers warranty as standard

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

Direct Telephone 01507 464181