Cavius CV2208 Mains Powered Optical Smoke Alarm RF 10yr Lithium Battery Backup 97x52mm Mains powered smoke alarm device with wireless interlink and battery back-up. Designed for installation in the home. This 97mm Mains Powered smoke alarm can be connected with other alarms from the CAVIUS Wireless alarm family or function as a stand alone alarm. Features RF Interconnection Built in (no base or module required) Connect up to 32 Alarms in the CAVIUS Wireless Family Range 10 Year Lithium Back Up Large Test / Hush Button Dual Mesh System Dust Compensation 10 Year Warranty Certified to BSEN 14604:2005 UK Standards Compliant Specifications CAVIUS Smoke detector makes an optical reading every 8 seconds. Interlink Frequency: 868MHz Interlink Range: Minimum 100m in open field. Range depends on the building materials and will need to be tested in each individual case. Operation AC/DC: 110V AC, 230V AC Alarm Sound Level: 85dB at 3 metres Dimensions: D: 97 mm. x H: 52 mm Approvals: BS EN14604:2005 Data Sheet: Click Here for Data Sheet Instruction Manual: Click Here for Instruction Manual