Blog Post


All You Need to Know About Alarms


Carbon dioxide is naturally present in our atmosphere, however just an increase of 0.5% can have negative effects on us. An unchecked increase to levels of CO2 can result in tiredness, light headedness, nausea and in the most extreme cases death.

Ever improving insulation in homes has had the adverse effect of also reducing ventilation which in turn means that naturally occurring CO2 can build up. In light of this, Scottish building regulations now require carbon dioxide monitors in the principal bedroom of dwellings where infiltrating air rates are less than 15m3/hr/m2 @ 50 Pa.

Green Lighting’s Carbon Dioxide (CO2) Monitor and Alarm uses an infrared (CO2) sensor making it a highly accurate and reliable alarm. There is a NDIR (nondispersive infrared) (CO2) sensor inside, with special self-calibration system, to ensure measurements are always precise.

It uses a three colour (green/yellow/red) LCD backlit screen indicating ventilation level based on (CO2) measurement (optimal/moderate/poor) and an inbuilt mutable buzzer. Also, to prevent distraction, the backlight brightness can be adjusted or turned off. The LCD screen will cycle through 2 different displays, changing every 10 seconds. These modes are:

  • Current CO2 levels (PPm) with
  • The average CO2 levels over the last 24 hours (in PPm)
  • The highest CO2 level in the last 24 hours (in PPm)

With its quality and features our Carbon Dioxide Monitor & Alarm is fully compliant with Scottish Buildings regulations.


Carbon monoxide alarms offer vital protection against carbon monoxide poisoning that can result from faulty heating and cooking appliances.

In England and Wales carbon monoxide alarms are required in any room where a new or replacement solid fuel appliance is fitted. In addition to this, private landlords are required to have alarms for any pre-existing appliances.

In order to meet Scottish regulations all households must have carbon monoxide alarms in any room that has a gas or solid fuel appliance present.

Green Lighting’s Carbon Monoxide Alarm offers portable protection that can be used wherever you are. With its sealed long-life battery and self-testing function, it meets the requirements of England, Wales and Scotland safety regulations.

Other features include:

  • End of life Indicator. Three short beeps every minute indicate end of sensor life.
  • LED indicators for power, alarm and fault condition.
  • Wall mountable and free standing
  • BS EN 50291-1:2010+A1:2012 compliant


Heat alarms are designed for kitchens or other areas where the conditions make it unsuitable for standard smoke alarms. While smoke alarms are prone to being triggered by particles in the air, heat alarms monitor the temperature instead. This means heat alarms can be installed in areas where dust, steam and smoke may cause false triggers in smoke alarms.

Scottish building regulations require a heat alarm in any kitchen while in England and Wales they must be fitted where there is no door separating the kitchen from the circulation space.

Green Lighting’s Mains Powered Heat Alarm has battery backup, is interlinkable and has a 10-year product life. These features mean they meet the building regulations of England, Wales and Scotland.

Additional features include:

  • Fast-Fix design simplifies fixing and wiring of the baseplate
  • Sleek slimline design
  • Push-fit wiring connection – fast and secure
  • Complies with BS 5446-2:2003


Were the unthinkable to happen, smoke alarms provide early warnings of fires to allow evacuation and help prevent the spread of fire and loss of life. This makes them a vital part of any fire safety system.

In England and Wales, alarms must be installed in circulation spaces such as hallways and landings of new builds, private rentals and new / materially altered social housing.

Scottish regulations require that all households have smoke alarms in the circulation spaces and in rooms most frequently used for general living purposes such as living rooms etc.

Green Lighting’s Fast Fix Mains Powered Smoke Alarm has a battery backup with a 10-year lifespan. This, alongside being fully interlinkable with heat alarms, mean it is compliant with English, Welsh and Scottish regulations

Features Include:

  • Mains powered with 9V battery backup with 10-year life
  • Particularly sensitive to smouldering fires, reacting faster than ionization alarms
  • Complies with BS EN 14604:2005
  • Fast-Fix design simplifies fixing and wiring of the baseplate