The Firex KF20 from Kidde is an optical smoke alarm and very effective in the detection of smouldering fires such as those started on furniture and electrical equipment such as TVs, making it the ideal alarm for use in living areas, hallways and landings. The KF20 is mains powered with a 9V Alkaline battery backup (included, replaceable) and can be inter-linked with up to 23 other Kidde mains alarms - including their ionisation, head and optical ranges. If one alarm is triggered in an inter-linked circuit, all alarms will go off, making the system an ideal warning for the whole of your home.
 
Features:
 
Optical smoke alarm - best for slow, smouldering fires such furniture and electrical equipment
Mains powered with a repleaceable 9V Alkaline battery back-up
TEST/HUSH button with Silence function for false alerts
Manual button test simulates the effect of smoke within the sensing chamber, checks electronics and sounder
Dust compensation and bug screen to avoid nuisance alarms
Sounds a short beep once a minute at battery end-of-life/improper connection
Auto reset after being triggered
Can be interlinked with up to 23 other Kidde Slick and Kidde Firex alarms in a hardwire connection
Tamperproof locking device to stop unauthorised battery removal
Complies with the updated 2022 Scottish legislation for smoke alarms
Approvals: BSI certified to BS EN14604:2005
6 year warranty