The Aico Ei650 is a stand-alone optical smoke detector, powered by a tamper-proof lithium battery pack with a lifespan of up to 10 years. It is incredibly effective at detecting slow-burning fires and features a large test/hush button for easy testing. Installation is straightforward with no wiring required and a simple twist-on base. The product is CE marked, tested to EN 14604: 2005, and comes with a 5-year manufacturer's warranty. Its 10-year lithium battery lasts the entire intended working life of the unit, eliminating the inconvenience of frequent battery changes. The optical sensor is more responsive to smouldering fires. This alarm conforms to the latest British Standards and UK (UKCA) and EU (CE) regulations. All homes in Scotland are now required by law to have ceiling-mounted and interlinked fire alarms, and this product can be interconnected with other Aico alarms. It includes a low battery warning and an end-of-life indicator for ongoing safety.