This carbon monoxide alarm uses an electrochemical sensor with a 10-year lifespan to detect CO accurately. It is powered by two replaceable AA batteries and emits an 85 dB alarm at 3 metres. The unit includes features such as alarm memory, test and silence button, and operates within temperatures of approximately -10°C to 40°C. It is certified to EN 50291-1 standards and suitable for portable or wall-mounted use.