Mains Powered Heat Alarm with Back-Up Battery - Kidde Firex Sentry KF31
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The Kidde KF31 and KF31R are mains-powered heat alarms, delivering dependable fire detection for kitchens, garages, and other high-risk areas. These alarms combine a 230V AC supply with a 9V battery backup (KF30) or a self-charging lithium battery backup (KF30R) for continuous protection. Designed for quick installation and reliable performance, they feature a practical Quick Fit base and can be interconnected with other Kidde alarms for whole-property safety.
- Power: 230V mains-powered with battery backup
- Backup: Optional alkaline or self-charging lithium backup battery versions
- Warranty: 10-year warranty
- Ideal for installation in kitchens and garages
- Thermistor heat sensor for accurate temperature detection
- Interconnectable with up to 23 other Kidde / Firex alarms via cable
- Loud 85dB alarm at 3 metres for clear alerts
- Quick-Fit slide-on base for fast and easy installation with a tamper-resistant locking mechanism
- Test & hush button for checking operation and silencing nuisance alarms
- Alarm memory function identifies the triggered unit with automatic reset after activation
- CE and UKCA marked
- Kitemarked
- Suitable for installations complying with Grade D2 (KF31R) or Grade D1 (KF31)
- Comes with a coloured dust cover (to protect alarm temporarily if dusty works are carried out)
- These alarms are suitable for both the Welsh and Scottish 2022 legislation
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Review this product nowTechnical Data
| Product Code | KEKF31 |
|---|---|
| Brand | Kidde |
| Approvals & Markings | CE Marked |
| UKCA Marked | |
| Back-Up Battery Type | Alkaline |
| British Standard Grade | Grade D2: Mains Powered (replaceable backup) |
| Colour | White |
| Compatible Products | Kidde Firex Alarms |
| Compliance | BS 5446-2: 2003 |
| BS 5839-6 | |
| Connection | Wired |
| Fixing Options | Screws (included) |
| Installation Position | Ceiling |
| Wall | |
| Local Legislation | Scottish Legislation (2022) |
| Welsh Legislation (2022) | |
| Material | Plastic |
| Maximum Number of Linked Devices | 24 Devices |
| Operating Temperature | -10°C To +40°C |
| Power Type | Mains Powered (230V) |
| Relative Humidity | Up To 93% |
| Recyclable | Yes - Valpak's WEEE Distributor Take-back Scheme |
| Sensor Type | Heat |
| Sound Level | 85dB |
| Storage Temperature | -20°C To +60°C |
| Warning Type | Audible - Alarm Sounder |
| Warranty | 10 Years |
| Dimensions (Unit) |
|
| Weight | 281g |
| Datasheets |
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