10 year life featuring replaceable batteries (2 x AA batteries included) | Advanced electrochemical sensor calibrated and tested in CO gas | Intelligent sensing algorithm, increase sensing rate on detection of low level CO | Increased alarm sound output – in line with the latest EN | 14604:2005+AC:2008 Standard, the sound output has been increased for a louder alarm and improved user safety | Memory function – indication of previous alarm activation | Data logging support via cable | Features integrated mounting bracket – easily wall-mount or place free-standing