Additional: Tested and approved laboratory in the UK. to ensure full compliance. Product: Get this Carbon Monoxide Alarm today! Perfect: For detecting Carbon Monoxide. LCD Display: Features an LCD display which shows the particle sampling count, ambient temperature and battery level. Memory Function: For detecting CO peak count in the last 24-hours. Durability: Lasts up to 5 years. | Carbon Monoxide Alarm | Wowcher