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Replacement Models for Discontinued Smoke Alarms

When smoke and heat alarms are discontinued it can be hard to track down a suitable replacement when your alarm reaches the end of its life. We have put together a helpful list of replacement models for discontinued smoke alarms. If you cannot see your alarm on the list please contact us with your model number and we will be happy to help.

Replacing a Ei151 and Ei151TL Ionisation Smoke Alarm

Discontinued: September 2016
Associated Codes Ei151, Ei151TL, Ei151TLH, Ei151TLR, Ei150, Ei150 Series

These models can be replaced by the Ei151RA. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Kidde KF1 and Kidde KF1R Ionisation Smoke Alarm

Discontinued: October 2015
Associated Codes Kidde KF1, Kidde KF1R, Kidde KF Series, Firex KF1

These models can be replaced by the KF10 and KF10R. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Kidde KF2 and Kidde KF2R Optical Smoke Alarm

Discontinued: October 2015
Associated Codes Kidde KF2, Kidde KF2R, Kidde KF Series, Firex KF2

These models can be replaced by the KF20 and KF20R. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Kidde KF3 and Kidde KF3R Heat Alarm

Discontinued: October 2015
Associated Codes Kidde KF3, Kidde KF3R, Kidde KF Series, Firex K32

These models can be replaced by the KF30. The new unit will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Kidde 123i and Kidde 1239HI Ionisation Smoke Alarm

Discontinued: November 2010
Associated Codes Kidde 123i, Kidde 1239HI, Kidde 1239HILL

These models can be replaced by the KF10 and KF10R. The new units will work with existing interlinked alarms however the base plate and cable harness need to be replaced, we recommend asking an electrician to carry out this work.

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Replacing a Kidde 223i and Kidde 2239HI Optical Smoke Alarm

Discontinued: November 2010
Associated Codes Kidde 223i, Kidde 2239HI, Kidde 2239HILL

These models can be replaced by the KF20 and KF20R. The new units will work with existing interlinked alarms however the base plate and cable harness need to be replaced, we recommend asking an electrician to carry out this work.

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Replacing a Kidde 323i and Kidde 3239HI Heat Alarm

Discontinued: November 2010
Associated Codes Kidde 323i, Kidde 3239HI, Kidde 3239HILL

These models can be replaced by the KF30 and KF30R. The new units will work with existing interlinked alarms however the base plate and cable harness need to be replaced, we recommend asking an electrician to carry out this work.

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Replacing a Ei156 and Ei156TL Optical Smoke Alarm

Discontinued: September 2016
Associated Codes Ei156, Ei156TL, Ei156TLH, Ei156TLR, Ei150 Series

These models can be replaced by the Ei156RA. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Ei154 and Ei154TL Heat Alarm

Discontinued: September 2016
Associated Codes Ei154, Ei154TL, Ei154TLH, Ei154TLR, Ei150 Series

These models can be replaced by the Ei154RA. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Ei131 Ionisation Smoke Alarm

Discontinued: Not Available
Associated Codes Ei131, Ei130 Series, Ei Mains Powered Ionisation

This model can be replaced by the Ei141. The new unit will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Ei136 Optical Smoke Alarm

Discontinued: Not Available
Associated Codes Ei136, Ei Mains Powered Optical, Ei130 Series

This model can be replaced by the Ei146. The new unit will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Ei134 Heat Alarm

Discontinued: Not Available
Associated Codes Ei134, Ei Mains Powered Heat, Ei130 Series

This model can be replaced by the Ei144. The new unit will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Kidde 4870 and Kidde 4881 Ionisation Smoke Alarm

Discontinued: October 2012
Associated Codes Kidde 4870, Kidde 4881, 1240C, 120-1123B (or C), GC240

These models can be replaced by the KF10 and KF10R. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Kidde 4973 and Kidde 4985 Optical Smoke Alarm

Discontinued: October 2015
Associated Codes Kidde 4973, Kidde 4985, PAR230C

These models can be replaced by the KF10 and KF10R. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Kidde 4899 and Kidde 4982 Heat Alarm

Discontinued: October 2015
Associated Codes Kidde 4899, Kidde 4982

These models can be replaced by the KF30. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a Kidde 1275H Ionisation Smoke Alarm

Discontinued: October 2015
Associated Codes Kidde 1275H

This model can be replaced by the KF10 and KF10R. The new units will work with the existing cable network so all you need to do is replace your baseplate. We recommend asking an electrician to change the alarm as the cables will need to be wired into the new unit.

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Replacing a EI603TYCRF Radio-Interlink Heat Alarm

Discontinued: August 2017
Associated Codes Ei603CRF, EI603TYCRF

This alarm can be replaced by the Ei603RF. The new units will work with the existing radio-interlink network and are powered by a 10-year longlife lithium battery, so an electrician is not needed for installation.

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Replacing a Ei603TYC Heat Alarm

Discontinued: September 2017
Associated Codes Ei603C, EI603TYC

This alarm can be replaced by the FireAngel HT-630. The new units are standalone alarms powered by a 10-year longlife lithium battery, so an electrician is not needed for installation.

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Replacing a Ei605TYCRF Radio-Interlink Optical Smoke Alarm

Discontinued: July 2017
Associated Codes Ei605CRF, EI605TYCRF

This alarm can be replaced by the Ei650RF. The new units will work with the existing radio-interlink network and are powered by a 10-year longlife lithium battery, so an electrician is not needed for installation.

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Replacing a First Alert SA720CEUK Battery Optical Smoke Alarm with Escape Light

A 9V alkaline battery powered optical smoke alarm with built-in bright escape light.

This alarm can be replaced by the FireAngel ST-623E. The new units are standalone alarms powered by replaceable alkaline AA batteries, and feature an escape light.

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Replacing a FireAngel SI-610 Ionisation Smoke Alarm

Discontinued: July 2018
Associated Codes FASI-610, SI-610, SI610

This model can be replaced by the FAST622T. The replacement alarms fit the same base and also have a ten year lithium battery but have improved sensors, making them less sensitive to false alarms.

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Replacing a FireAngel SO-601 Optical Smoke Alarm

Discontinued: October 2018
Associated Codes FASO-601, SO-601, SO601

This model can be replaced by the FAST622T. The replacement alarms fit the same base and also have a ten year lithium battery but have improved sensors, making them less sensitive to false alarms.

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Replacing a FireAngel ST-620 Thermoptek Smoke Alarm

Discontinued: October 2018
Associated Codes FAST-620, ST-620, ST620

This model can be replaced by the FAST622T. The replacement alarms fit the same base and also have a ten year lithium battery but have improved sensors, making them less sensitive to false alarms.

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Replacing a BRK 760MRL Mains Optical Smoke Alarm with Lifetime Back-up Battery

Discontinued: January 2021
Associated Codes 760MRL, 660MRL

The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives. Since it is not possible to interlink alarms from different manufacturers, the recommended replacement for the whole discontinued BRK 700MRL range is the Aico Ei3000 series.

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Replacing a Mains Ionisation Smoke Alarm with Lifetime Back-up Battery - BRK 770MRL

Discontinued: January 2021
Associated Codes 770MRL, 670MRL

The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives. Since it is not possible to interlink alarms from different manufacturers, the recommended replacement for the whole discontinued BRK 700MRL range is the Aico Ei3000 series.

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Replacing a Mains Powered Heat Alarm with Back-Up - BRK 790MBX

Discontinued: January 2021
Associated Codes 790MBX, 690MBX

The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives. Since it is not possible to interlink alarms from different manufacturers, the recommended replacement for the whole discontinued 700MBX range is the Kidde Firex series.

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Replacing a Mains Powered Heat Alarm with Sealed Lifetime Back-up Battery - BRK 790MRL

Discontinued: January 2021
Associated Codes 790MRL, 690MRL

The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives. Since it is not possible to interlink alarms from different manufacturers, the recommended replacement for the whole discontinued BRK 700MRL range is the Aico Ei3000 series.

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Replacing a Mains Powered Optical Smoke Alarm - BRK 660MBX

Discontinued: February 2021
Associated Codes 660MBX, 760MBX

The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives. Since it is not possible to interlink alarms from different manufacturers, the recommended replacement for the whole discontinued 600MBX range is the Kidde Firex KF series.

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Replacing a Mains Powered Heat Alarm - BRK 690MBX

Discontinued: February 2021
Associated Codes 690MBX, 790MBX

The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives. Since it is not possible to interlink alarms from different manufacturers, the recommended replacement for the whole discontinued 600MBX range is the Kidde Firex series.

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Replacing a Ei2110eRF - Multi-sensor Alarm with Lithium Backup Battery & RadioLINK+ Interlink

Discontinued: March 2021
Associated Codes Ei2110RF, Ei2110eRF, Ei100MRF

This alarm can be replaced by the Ei3024RF. The new units will work with the existing radio-interlink network and use the same base plate, so an electrician is not needed for installation.

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Replacing a Ei2110e - Multi-sensor Alarm with Lithium Backup Battery

Discontinued: March 2021
Associated Codes Ei2110, Ei2110e

This alarm can be replaced by the Ei3024. The new units will work with the existing hardwire interlink network and use the same base plate, so an electrician is not needed for installation.

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Replacing a Mains Powered Smoke Alarm with Back-up - BRK 760MBX

Discontinued: February 2021
Associated Codes 760MBX, 660MBX

The manufacturer has withdrawn from the European market and is no longer supplying compatible alternatives. Since it is not possible to interlink alarms from different manufacturers, the recommended replacement for the whole discontinued 700MBX range is the Kidde Firex series.

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