Kidde Firex 230V Mains Optical Smoke Alarm with Alkaline Battery 127mm

· · Interlink with up to 23 Firex hard-wired alarms (all alarms sound if danger is detected) · · Alarm memory identifies source unit within interconnecting network · · Reduced energy consumption · · Dust compensation and bug screen reduces nuisance alarms · · Combined Test/Hush button allows regular testing of alarm function and can be used to temporarily silence nuisance alarms · · Auto-reset after activation · · Tamper-resistant locking device prevents unauthorised removal without the use of a tool · · Mains operation (9V Alkaline backup battery supplied as standard) · · Sensor – optical & circular lateral chamber with insect-resistant width & 9-slot entry portals · · Push-in/snap-fit type connector with 150mm long flying leads (supplied)