Carbon monoxide alarms should comply with BS EN 50291-1:2018, include an integral sounder and be powered by a battery designed to operate for the working life of the alarm.
Dylai larymau carbon monocsid gydymffurfio â BS EN 50291-1:2018 ac ymgorffori seinydd a chael eu pweru gan fatri sydd wedi'i ddylunio i weithio am oes weithredol y larwm.