The Kidde KF10 is a mains powered smoke alarm with a 9V back-up battery with the capability of interlinking with other Firex KF series alarms via hardwire. The ionisation-based sensor in the KF10 has been discontinued by Kidde and the ideal alternative is the KF20. The KF20 uses all the same features of the KF10, however adopts the newer optical sensor technology using the same base plate and connector. This ensures the smooth transition from one alarm to the next without the need for an electrician.
Optical smoke detection is much less susceptible to false alarms from everyday fumes such as cooking vapours and natural humidity. This makes them ideal for installation in hallways, bedrooms, landings and living areas, including those rooms adjacent to kitchens, but not within them.
Please note: The Kidde Firex KF20 is also the replacement for the Kidde 123i / 1239HI, and can be electrically interlinked. However, the new model cannot be used on the old base plates for the 123i / 1239HI as they use different style connector blocks. This means that base plates must be swapped over on those stated models and connectors need to be replaced. Please see our Replacement Compatibility table for a list of alarms that can be replaced with this product.
The table below shows the Kidde smoke alarms which can be replaced by the KF20 optical smoke alarm when they reach the end of their 10 year lifespan.
|KF10||Kidde KF10 Ionisation Smoke Alarms with Alkaline Backup||Simple swap – no electrician needed|
|KF10R||Kidde KF10R Ionisation Smoke Alarms with Lithium Backup||Requires connector to be swapped by electrician|
|KF1||Kidde KF1 Ionisation Smoke Alarms with Alkaline Backup||Simple swap – no electrician needed|
|KF1R||Kidde KF1R Ionisation Smoke Alarms with Lithium Backup||Requires connector to be swapped by electrician|
|4870 / 4881||Kidde 4870 and Kidde 4881 Ionisation Smoke Alarms||Requires connector to be swapped by electrician|
|1240C / IAR230C||Kidde 1240C and Kidde IAR230C Ionisation Smoke Alarms||Simple swap – no electrician needed|
|123i / 1239HI||Kidde 123i and Kidde 1239HI Ionisation Smoke Alarms||Requires connector to be swapped by electrician|
|1275H||Kidde 1275H Ionisation Smoke Alarm||Requires connector to be swapped by electrician|
|Alternative Product Codes||KF10, 4870, KF1, 4881, K10C, KF20|
Replaceable 9V Alkaline
39 x 133mm
0°C to +40°C
Up to 93%
|Product Code: KEKF10-RA||
More than 20 in stock Expected dispatch: Today
£21.00 inc VAT
£17.50 ex VAT
The following delivery options are available on this product.
9 customers have given this product an overall rating of 4.8 out of 5
Rating: 4 / 5 Stars
Reviewed by: J L
Express delivery Received order quickly. Happy with product. Works well.
Published on: 2nd December 2023
Rating: 5 / 5 Stars
Reviewed by: A E
Easy to fit and quick delivery and good price thansk a lot
Published on: 20th November 2023
Rating: 5 / 5 Stars
Reviewed by: P C
Replaced old units for new, simple to replace and good quality units
Published on: 16th November 2023