The Kidde 10LLCO Carbon Monoxide Alarm is a sleek, lightweight carbon monoxide (CO) alarm with a non-replaceable, sealed-in Lithium battery which provides 10 years of continuous protection, meaning that the battery will not have to be changed for the duration of the alarm's life. The alarm has a unique water-based Kidde CO Electrochemical Sensor and features an alarm memory, meaning that a red LED will flash every 60 seconds to indicate a CO 'event' has occurred. A CO 'Quick-Test' feature temporarily desensitises the CO sensor to allow quick-testing using approved CO sprays. An interrogation feature allows peak level, test history to be analysed by Kidde upon arrangement. The alarm has 3 LEDs - alarm, operate and fault. It's end-of-life alarm alerts the user to replace the alarm. A test/reset button allows regular testing of the alarm function. This slim, easy-to-use alarm is ideal for use in all living areas and can be installed on a wall or ceiling or used free-standing on a table