Matelec FSA-60000 Photoelectric Smoke Alarm, Detector, 240V with 10 Year Lithium Rechargeable Battery Back Up, 85dB @ 3mtr, 132mm Dia x 43mm, Surface Mount, White

Features:
• Discrete slimline appearance
• Premium quality and design
• Interconnectable with up to 24 units (wired 150m max, wireless 60m max)
• Compatible with FSA-50000 wireless interconnect module, for wirelss interconnection with FSA-30000
• 3V DC 10 year lithium battery
• Separate hush/test button
• Hinged detachable base - easy push button open
• No Battery', 'No Close' feature
• Loop terminal provided
• Mounting holes line up with standard plaster brackets
• Base recessed for mains cabling - no need for large ceiling cut-away
• LED indicators
• Low Battery audible warning