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Replacement for DETA 1151 Mains Powered Smoke Alarm

Discontinued Product - No Compatible Replacement

This product has been discontinued.

alternative product

Kidde Firex Mains Powered Alarms with Alkaline Battery

  • 230V mains powered with alkaline back-up battery
  • Available in Optical and Heat versions
  • Interlink with up to 24 units
  • Suitable for BS 5839-6: 2019 Grade D2 installations
  • Kitemarked and CE marked
  • Please note: alarms are sold individually
  • Also suitable for both the Welsh and Scottish 2022 legislation

£21.00 inc VAT

£17.50 ex VAT

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Product Overview

The DETA 1151 is a mains powered smoke alarms with alkaline back-up batteries and has now been discontinued by the manufacturer. To ensure that owners of existing DETA 1150 systems can continue to use their current wiring, BRK developed their 670MBX alarm to be fully compatible with your outgoing and remaining DETA alarms and bases. They are guaranteed to fit directly onto your existing bases so an electrician is not required.

The supplied BRK 670MBX is an ionisation smoke alarm ideal for landings areas and detects fast flaming fires quickly. This alarm features a central test and hush button making maintenance very easy while a replaceable 9V alkaline backup battery ensures that it continues to operate even during a power failure, so you are never without protection.

  • Power: 230V mains powered with back-up battery
  • Back-up Battery: 9V alkaline back-up battery (included)
  • Warranty: 5 year manufacturer's warranty
  • Fits onto your existing DETA alarm push-fit base
    • BRK push-fit base also included to keep as a spare
  • Ionisation sensor provides quick detection of fast flaming fires
  • CE and Kitemarked to BS EN 14604: 2005
  • Performs its own self-checks every 48 seconds to ensure the alarm is functioning correctly
  • Test and silence button feature
  • Product warranty and life commences from date of purchase

The simple installation process of the 670MBX replacement alarm removes the need for an electrician, though you must ensure that mains power to all interlinked alarms is cut before beginning work. The interlink wire can carry a live electric current between alarms if they are powered from different circuits.

Compatible Alarms

Below is a table of all alarms which can be interchanged using the same base plate and interlink system. Care should be taken to ensure the correct model is purchased to replace existing alarms. Optical smoke alarms can be used in place of ionisation smoke alarms, but heat alarms and smoke alarms serve different purposes and cannot be swapped.

Original Model Type of Alarm Replacement Model
DETA 1111 Ionisation Smoke Alarm with Alkaline Battery and Twist Base DT11RA
DETA 1113 Optical Smoke Alarm with Alkaline Battery and Twist Base Discontinued
DETA 1115 Heat Alarm with Alkaline Battery and Twist Base Discontinued
DETA 1151 Ionisation Smoke Alarm with Alkaline Battery and Push Base DT51RA
DETA 1153 Optical Smoke Alarm with Alkaline Battery and Push Base Discontinued
DETA 1155 Heat Alarm with Alkaline Battery and Push Base Discontinued

Technical Data
Product Code DT51RA
Alternative Product Codes DETA1151, 1151, BRK670MBX, BRK670MBX-PUSH
Brand DETA
Back-Up Battery

Replaceable 9V Alkaline

Dimensions (HxDia)

38 x 133mm

Operating Temperature

+5 °C to +38 °C

Relative Humidity

10% to 85%

Sound Output



5 years

Weight 0.27kg
Product Datasheets

Excellent Warranty

This product is supplied with a 5 year manufacturers warranty as standard

Customer Reviews

5 customers have given this product an overall rating of 4.8 out of 5

Reviews by real customers

All of our product reviews are written by real customers that have purchased this product from us and are published without modification.

Rating: 4 / 5 Stars

Reviewed by: B G

Does the job, without the need to replace the base plate from the previous model. Opening up the main section to remove when fully fitted is a little difficult. Knowing how much pressure to exert with a screwdriver only comes with the experience of changing batteries or removing the older version at 02:00 am when the alarms were going off for no reason at all. A simpler clip or key would be a better design idea.

Published on: 10th July 2021

Rating: 5 / 5 Stars

Reviewed by: T G

An excellent replacement unit very easy to fit

Published on: 2nd November 2020

Rating: 5 / 5 Stars

Reviewed by: J J

Impressed, easy to install

Published on: 9th August 2020

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