Powered by a 10-year sealed battery. Battery cannot be removed, ensuring continued protection. Easy to fit twist on base of alarm. Proven electrochemical sensor. AudioLINK data extraction technology is built-in. Download the AudioLINK app on a compatible tablet or smartphone for a simple and easy-to-readAlarm Statusreport. Report contains data such as alarm activations, carbon monoxide levels, background levels of carbon monoxide and battery life. Not able to connect with any other alarms as it is not compatible with any interconnection methods. Alarm triggers at 50ppm within 60-90mins, 100ppm within 10-40mins and 300ppm within 3mins. Standalone 10-Year Sealed Tamperproof Lithium Integrated Battery 85dBA Alarm at 3m Test/Hush Button Standalone 10-Year Sealed Tamperproof Lithium Integrated Battery 85dBA Alarm at 3m Test/Hush Button