Mains-powered optical smoke 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.
Shipping Information
Only cards registered to Irish banks can be accepted. We apologise if there is any inconvenience.
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
Dust compensation and bug screen – reduces nuisance alarms
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
Mains operation – 9V Alkaline back-up battery supplied as standard
WHERE TO USE
Optical alarms are for use in escape or circulation routes and in areas where there is a danger of ignition of furniture and surroundings by cigarettes producing slow, smouldering fires. This mains-powered unit should be installed by a qualified electrician and can be used throughout the home, except in the kitchen where a Firex Heat Alarm is recommended. These alarms comply with UK Building Regulations for new housing and associated standards (Grade D BS 5839, Part 6).
GENERAL FEATURES
Model
KF20
Power Supply
230V mains-powered with 9V Alkailine battery back-up
Temperature Range
0ºC to +40ºC
Humidity Range
Up to 93% Relative Humidity (RH) non-condensing
Storage and Transport
-20ºC to +60ºC and 5–95% relative humidity (RH) non-condensing
Alarm Dimensions
127 x 127 x 39mm
Bracket Dimensions
133 x 133 x 6mm
Alarm Weight
242g
Warranty
6 years
Approvals
BSI certified to BS EN14604:2005 CE tested and certified
TECHNICAL SPECIFICATION
Sensor
Optical, circular lateral chamber with insect-resistant width slot entry portals and added bug screen mesh
Chamber Size
35mm outside diameter x 16mm depth approximate (external)
Detection Band
Infrared light wavelength
Button Test
Simulates the effect of smoke within the sensing chamber, checks electronics and sounder
Automatic Self-test
Circuitry is tested and unit beeps (chirps) if fault is detected
Supply Voltage
230V AC, 50 Hz (nominal UK voltage)
Power Consumption
< 15mA
Connection
Push-in/snap-fit type connector with 150mm long flying leads (supplied)
In-built foam gasket in rear of alarm to prevent dust ingress into rear of the alarm
Alarm Status
Red LED flashes approx once every five minutes = normal operation Red LED flashes once a second = sensing smoke (sounder alarm sounds) Red LED flashes once every ten seconds = in hush condition (auto-reset after 15 minutes)
Interconnection
Up to 24 Firex and Kidde ‘Slick’ units (smoke, heat and CO) can be hardwire interconnected with optional control (see below)
Optional Controls
Wired Remote Test and Hush Unit (REMTH) allows test and hush of interlinked units
Optional Pattresses
SMK23RU also has integral switchable relay for operating remote devices SMK4896 – Surface mounting base for added ease of installation
Fixing
Mounting bracket ring supplied with two ‘T’ slot fitting option 57mm spacing to a maximum of 90mm for standard screw fittings on back boxes Bracket has 50mm diameter central access hole for cabling
