Kidde-Firex-Mains-Optical-KF20-Smoke-Alarm-Left-1x1

Interconnectable Optical Smoke Alarm with Back-up Battery

KF20
Location
Attic/loft, Bedrooms, Living Room, Hallway/Corridor
Sensor
Optical
Warranty
6 years
Battery

230V mains-powered with replaceable 9V Alkaline battery back-up

Battery Life
1-year
Alarm Grade
D2

Specifications

Model
Power Source
Sensors
Audio Alarm
Approvals / Certification
Dimensions
Weight
Temperature Range
Storage and Transport
Humidity Range
Warranty
  • Interlink with up to 23 Firex hard-wired alarms – all alarms sound if danger is detected
  • Alarm memory – identifies source unit within interconnecting network
  • Combined Test/Hush button allows regular testing of alarm function and can be used to temporarily silence nuisance alarms,/li>
  • 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

Comparison Chart

Model Number
Detection Type
Power Source
Battery Life (Minimum)
Never Change Battery
Interconnected Alarms
Voice Alerts
NCC Certified (for Motorhomes / Static Homes)
10-Year Warranty
Kidde-Firex-Mains-Optical-KF20-Smoke-Alarm-Left-1x1
KF20
Smoke
AC / Hard-wired
1-year (Back-up battery only)
Minus
Check
Minus
Minus
Minus
Kidde-2030-DSR-Face-1x1Optical Smoke Alarm
2030-DSR
Smoke
Battery
1-year
Minus
Minus
Minus
Minus
Minus
Kidde-2030-DSR-Face-1x13 Year Battery-life Smoke Alarm
2030-DSR3
Smoke
Battery
3-years
Minus
Minus
Minus
Minus
Minus
DY29_Face5 Year Battery-life Smoke Alarm
DY29
Smoke
Battery
5-years
Minus
Minus
Minus
Check
Minus
Kidde-10Y29-Smoke-Alarm-Front-10-Year-1x110 Year Optical Smoke Alarm
10Y29
Smoke
Battery
10-years
Minus
Minus
Minus
Minus
Check
Cavius-2007-1250x1250Kidde 40mm Smoke Alarm
K2007
Smoke
Battery
10-years
Check
Minus
Minus
Check
Check
Cavius-3003-1250x1250Kidde 40mm Heat Alarm
K3003
Heat
Battery
10-years
Check
Minus
Minus
Check
Check
Kidde-Firex-Mains-Optical-KF20-Smoke-Alarm-Left-1x1Interconnectable Optical Smoke Alarm with Rechargeable Battery
KF20R
Smoke
AC / Hard-wired
Back-up battery only
Check
Check
Minus
Check
Minus
Kidde-Firex-Mains-KF30-Heat-Alarm-Left-1x1Interconnectable Heat Alarm
KF30
Heat
AC / Hard-wired
1-year (Back-up battery only)
Minus
Check
Minus
Minus
Minus
Kidde-Firex-Mains-KF30-Heat-Alarm-Left-1x1Interconnectable Heat Alarm with Rechargeable Battery
KF30R
Heat
AC / Hard-wired
Backup battery only
Check
Check
Minus
Check
Minus
K10SCO10 Year Long-Life Smoke & Carbon Monoxide Combination Alarm
K10SCO
Smoke / CO
Battery
1-year
Minus
Minus
Check
Minus
Check
Sentry KF21 FRONTInterconnectable SENTRY Mains Smoke Alarm with Rechargeable Lithium Back‑Up
KF21R
Smoke
AC / Hard-wired
Back-up battery only
Check
Check
Minus
Check
Check
sentry front kf21Interconnectable SENTRY Mains Smoke Alarm with Replaceable Back-Up Battery
KF21
Smoke
AC / Hard-wired
1-year (Back-up battery only)
Minus
Check
Minus
Minus
Check
2050-DS10
Smoke
Battery
10-years
Check
Minus
Minus
Minus
Check
2050-DS10-B
Smoke
Battery
10-years
Check
Minus
Minus
Minus
Check