DESCRIPTION Mains-powered heat alarm that can be interlinked with up to 23 other Kidde mains alarms, be they ionisation, optical or heat. Once interlinked, the detection of the relevant danger by an individual unit will sound across all the connected alarms. KEY FEATURES ---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 – lower lifetime running costs. ---Combined Test/HushTM 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.