Boasting an impressive lifespan and warranty of up to 10 years, the Honeywell XC100 carbon monoxide detector is suitable for caravan, boat and domestic installation, and is available with or without an LCD display. When triggered, as well as an audible alarm, the Honeywell XC100 uses a unique backlit display that provides a prominent warning message of "ALARM EVACUATE" and the emergency telephone number. The Honeywell CO detector requires no replacement parts and carries out an automatic self test for the electronics every 60 minutes.