The Ei Electronics 605 smoke detector is a reliable optical smoke detection device powered by a standard 9V alkaline battery, providing comprehensive fire protection without the need for an external 230V power supply. This standalone unit has a diameter of 120 mm and a height of 40 mm, featuring a clean white finish comparable to RAL 9001. With an alarm sound level of 85 dB(A), it delivers clear audible warnings upon smoke detection. The unit includes practical test and mute buttons for easy functionality checks and temporary silencing of alarms. The battery status monitoring alerts users when energy levels are low to ensure continuous protection. Installation is straightforward with included mounting materials and supports surface mount applications. Constructed from durable plastic with an IP20 protection rating, this detector incorporates an insect-resistant grille to prevent false alarms caused by small intruders. The alkaline battery typically requires annual replacement for optimal performance. As part of the Ei600 series, this detector focuses on essential safety features for residential environments and maintains reliable operation through its simple battery-powered design, eliminating complex wiring requirements.