The law in Scotland has changed and as of 1 February 2022 every home now needs to have interlinked fire alarms. So you should check your alarm if they complies with the standards - Carbon monoxide detectors: British Kitemark EN 50291-1

There are 2 types of interlinked fire alarms that meet the new rules:

sealed battery alarms – which should be tamper-proof long-life (which can be up to 10 years) batteries. You can fit these alarms yourself.

mains-wired alarms - these are cheaper than tamper proof long-life battery alarms, but should be installed by a qualified electrician. These should be replaced every 10 years.

Both types of alarm are interlinked by radio frequency without the need for WiFi.

If the carbon monoxide alarm is battery operated, it must have a sealed battery for the duration of its lifespan, which may be up to 10 years. 

Carbon monoxide alarms will be mandatory in UK

According to The Smoke and Carbon Monoxide Alarm (England) Regulations 2015, landlords in England are required by law to “provide a carbon monoxide detector (CO alarms) in any room used as living accommodation where solid fuel is used .that means housing providers are required by law to install smoke alarms in all social housing, and carbon monoxide alarms must be fitted in social and private rented properties with fixed appliances such as gas boilers or fires.

10 years after the product leaves the manufactory, You can check the date of production on the product

 Built-in 10 years Sealed lithium battery, The whole unit will need to be replaced in 10   years. 

 The regulations require a carbon monoxide alarm must be installed in

WOLF SHIELD pack comes with two wall screws and screw plugs,the unit an be mounted on the wall, After installing the bottom plate, you can use it directly when you put the product on it.

According to the manual, This alarm has been rigorously tested for immunity to a variety of gasses and vapors, which could affect the operation of the CO-Alarm. However caution should be taken, when handling or decanting oils, cleaning fluids, polishes, paints and greases. The vaporized products of cooking operations may also cause nuisance alarms over time.

The substances listed below may cause alarms other than carbon monoxide alarms at high concentrations; Methane, propane, isobutane, ethylene, ethanol, alcohol, isopropanol, benzene, toluene, acetaldehyde, acetate, hydrogen, hydrogen sulfide, sulfur dioxide

Test button,Normally, You can run a test as often as you like (mid week / once a week)