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Mains Powered Replacement Smoke Alarm for Ei150 / Ei151 / Ei151TL / Ei151TLH

This product has been discontinued
Product Overview

These alarms are available in two versions.

Replacement detector kit (no electrician required) - An Ei150 / 151 / 151TL ionisation smoke alarm can be easily replaced at the end of its life using an Easichange Ei151EK replacement detector kit. The kit (genuine EI components) allows domestic users to replace their alarm without the assistance of an electrician. Safelincs offers this replacement kit for domestic users as well as the standard unit and base that requires an electrician for installation.

New installation detector and base (for electrician install) - The Ei151TL, also known as the  Ei150, Ei151 and Ei151TLH has to be fitted by an electrician and allows existing systems to be extended

Technical Features:

  • Responds quickly to fast flaming fires
  • Easy to use Test and Hush buttons
  • Separate mains and warning LEDs
  • Low power cell warning in the event of mains or cell failure
  • Precision charging circuit ensures peak cell performance
  • Interconnects with other Ei Professional mains powered smoke & heat alarms
Technical Data

This is the technical data for the Mains Powered Replacement Smoke Alarm for Ei150 / Ei151 / Ei151TL / Ei151TLH.

Dimensions (HxWxD) 140x120x46mm
Sound Output 85dB
Back-Up Battery Longlife Lithium
Temperature Range 0°C to +40°C
Humidity Range 15% to 95% Relative Humidity

Technical Data Sheets

The following technical data sheets are available for this product:

FAQs (2)

Q. I need to take a chirping Ei150 series smoke alarm off the base to stop the noise. Can I switch the power back on after that or do I have to wait til I received the replacement smoke alarm?

A. You can switch the power back on straight away after removing the alarm. This does not damage the system.

Q. My 13 year old Ei151tl smoke alarm is bleeping, even when I remove it from its base. I think it has a sealed battery.

A. The alarm should chirp for about 5 to 10 minutes and then stop. After that the detector will be dead.

Pricing & Availability

Model Price Weight
Replacement Detector Kit (No electrician required)
Product Code: EI151EK

£30.99 ex VAT

£37.19 inc VAT

0.21kg
New Installation Detector and Base (For electrician install)
Product Code: EI151TL

£31.19 ex VAT

£37.43 inc VAT

0.21kg

Customer Reviews

129 customers have rated this product and it has an overall rating of 4.8 out of 5

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

5 / 5 Stars

Reviewed by: CS

Easy to install new replacement, clear instructions included.

Published on: 19th September 2016

4 / 5 Stars

Reviewed by: SS

Very easy to install.

Published on: 27th August 2016

5 / 5 Stars

Reviewed by: MT

Very replacement for old ones. Good, prompt service.

Published on: 26th August 2016

4 / 5 Stars

Reviewed by: JP

Seems well made with a good loud alarm Don't know how well it works as it has fortunately not been tested in an emergency situation

Published on: 24th August 2016

5 / 5 Stars

Reviewed by: MA

Exactly what was need to replace an old alarm Excellent advice given if you need it. Prompt delivery. Item exactly as described and was fitted easily

Published on: 20th August 2016

5 / 5 Stars

Reviewed by: KO

Great product, exceptional service Moving into premises 8 years ago where the fire alarms were already connected, I couldn't complain when they required replacing. The direct swap didn't turn out to be as straight forward as hoped as it turned out the alarm was older than suspected but the assistance and advice I received from the company was excellent and exceeded expectation.

Published on: 8th August 2016

5 / 5 Stars

Reviewed by: MT

Exactly what it said in the advert.

Published on: 28th July 2016

5 / 5 Stars

Reviewed by: RA

Very easy to fit and replacement works just fine. N/A

Published on: 24th July 2016

5 / 5 Stars

Reviewed by: GC

Ordered as a replacement for an old unit, came quickly and very easy to fit for a non-expert.

Published on: 26th June 2016

5 / 5 Stars

Reviewed by: HT

Great service

Published on: 8th June 2016

5 / 5 Stars

Reviewed by: RS

Good quality with clear instructions

Published on: 10th May 2016

4 / 5 Stars

Reviewed by: NA

Strsightforward to replace

Published on: 7th May 2016

4 / 5 Stars

Reviewed by: SS

Easyfit direct replacement Was happy with their predecessors for 10 years so purchased again.

Published on: 18th April 2016

4 / 5 Stars

Reviewed by: PN

Ordered to repace expired previous unit, does what it says on the tin, straight forward to order promptly delivered.

Published on: 14th April 2016

5 / 5 Stars

Reviewed by: RR

Easy to fit

Published on: 10th February 2016

5 / 5 Stars

Reviewed by: SH

Product is precisely as described Easy to replace the original. Just click out, change over wiring, click back and test. SIMPLES!!

Published on: 2nd February 2016

5 / 5 Stars

Reviewed by: WS

arrived quickly and very easy to install

Published on: 30th January 2016

4 / 5 Stars

Reviewed by: IE

Excellent service and just what we needed

Published on: 1st January 2016

5 / 5 Stars

Reviewed by: IE

Excellent service and just what we wanted

Published on: 1st January 2016

5 / 5 Stars

Reviewed by: KC

Very easy to replace , helpful staff.

Published on: 13th December 2015

5 / 5 Stars

Reviewed by: MH

excellent quick service replacement for 20 year old product. easy to fit.

Published on: 6th December 2015

5 / 5 Stars

Reviewed by: RS

Replacement for an old alarm,arrived very quickly,easy to fit.

Published on: 27th November 2015

5 / 5 Stars

Reviewed by: PH

The alarm lasted 17 years an excellent product followed up with an excellent service ith a sensibly priced replacement unit

Published on: 25th November 2015

5 / 5 Stars

Reviewed by: FL

Easy to fit. I hope it is never required.

Published on: 10th November 2015

5 / 5 Stars

Reviewed by: RF

straight swap for original fitted 12 years ago and out of date

Published on: 12th October 2015

5 / 5 Stars

Reviewed by: CM

Good service, instructions, tool/pen and product.

Published on: 11th October 2015

5 / 5 Stars

Reviewed by: CI

Easy to order and fit

Published on: 18th September 2015

5 / 5 Stars

Reviewed by: SD

Excellent service and product Very easy to install

Published on: 13th September 2015

5 / 5 Stars

Reviewed by: SK

Perfect easy to fit, worked straightaway, couldn't have been easier Overall rating: excellent. and it was a delightful surprise to find that the alarm was still available and so simple to fit. Thank you!

Published on: 26th July 2015

5 / 5 Stars

Reviewed by: PB

Good service delivery

Published on: 26th July 2015

5 / 5 Stars

Reviewed by: AJ

Exactly what was required thanks to very informative website

Published on: 21st July 2015

5 / 5 Stars

Reviewed by: ID

Replaced previous alarm (time expired).

Published on: 15th June 2015

5 / 5 Stars

Reviewed by: VC

Very efficient & helpful staff

Published on: 14th June 2015

5 / 5 Stars

Reviewed by: PM

Great Service, straight forward,no hassle

Published on: 9th June 2015

5 / 5 Stars

Reviewed by: AM

Great product and easy to install

Published on: 30th April 2015

5 / 5 Stars

Reviewed by: AN

The service provided was excellent & the fitting easy, now we are happy with the detector.

Published on: 22nd April 2015

5 / 5 Stars

Reviewed by: RB

Easy to fit after working out it was on another base plate.

Published on: 20th April 2015

4 / 5 Stars

Reviewed by: AT

Easy to fit and good telephone support

Published on: 31st March 2015

5 / 5 Stars

Reviewed by: PR

Easy to fit & do not give false alarms

Published on: 18th February 2015

5 / 5 Stars

Reviewed by: JM

Very easy to install & no faults experienced so far

Published on: 8th December 2014

5 / 5 Stars

Reviewed by: AS

Excellent replacement for existing alarm which had failed.

Published on: 23rd November 2014

5 / 5 Stars

Reviewed by: SL

easy to fit quality product

Published on: 23rd November 2014

4 / 5 Stars

Reviewed by: S

Replacement for old faulty model so just had to swap body

Published on: 22nd November 2014

4 / 5 Stars

Reviewed by: BF

What I expected

Published on: 22nd November 2014

5 / 5 Stars

Reviewed by: SI

Replacement Smoke Alarm Excellent value. Bought to replace the old one which had lasted well over the date on it.(Over 2 years) Easy to remove the old and replace with the new one.

Published on: 12th November 2014

5 / 5 Stars

Reviewed by: RS

effective product easy to install

Published on: 12th November 2014

5 / 5 Stars

Reviewed by: SB

A STAR SERVICE

Published on: 2nd November 2014

5 / 5 Stars

Reviewed by: ES

we lnow the house is safe with an Aico mains connected smoke alarm

Published on: 23rd October 2014

4 / 5 Stars

Reviewed by: PM

Straight forward instrucions, easy to fit.

Published on: 9th October 2014

5 / 5 Stars

Reviewed by: MC

This was a replacement for an existing unit

Published on: 29th September 2014

5 / 5 Stars

Reviewed by: MJ

Excellent replacemtn for my last smoke alarm I bought this as my last 150 Series Ionisation Smoke Alarm c/w Lithium Battery was 10 years old and needed replacing. It was easy to fit and works perfectly.

Published on: 26th September 2014

5 / 5 Stars

Reviewed by: JW

excellent product and service, many thanks.

Published on: 26th September 2014

5 / 5 Stars

Reviewed by: JG

Direct replacement for existing alarms, easily fitted

Published on: 19th September 2014

4 / 5 Stars

Reviewed by: VM

easy to fit just clips on where the other one came off

Published on: 3rd September 2014

5 / 5 Stars

Reviewed by: MS

Great this company still stock these. Was able to replace my out of date alarms within minutes. Quick delivery too. Thanks!

Published on: 1st September 2014

5 / 5 Stars

Reviewed by: CT

Good products and service. This is a really nice service. I was able to replace all of the detectors in my house in five minutes. No fuss, clear instructions.

Published on: 29th August 2014

4 / 5 Stars

Reviewed by: PH

delivery was quick will these people again

Published on: 28th August 2014

4 / 5 Stars

Reviewed by: NS

Easy to install with good instructions .

Published on: 14th August 2014

5 / 5 Stars

Reviewed by: PM

Works as expected

Published on: 9th August 2014

4 / 5 Stars

Reviewed by: PK

Good efficient service,first class process

Published on: 30th June 2014

4 / 5 Stars

Reviewed by: WM

excellent and easy to install product

Published on: 19th May 2014

5 / 5 Stars

Reviewed by: KS

Excellent

Published on: 10th April 2014

5 / 5 Stars

Reviewed by: WB

No problem with instructions and the tool made fitting easy.

Published on: 28th February 2014

5 / 5 Stars

Reviewed by: NP

very fast service . its a no brainner next time I need anything

Published on: 25th February 2014

5 / 5 Stars

Reviewed by: GJ

Great product, straightforward instructions, so simple to install, a life saver. I bought 2 of these life saving products just before Christmas. The service from Safelincs was first class. Extremely helpful staff on the end of the phone, and both products arrived in less than 24 hours after ordering !!!! Installed both alarms in less than 20 minutes. Very good value for money. The smoke alarms they have replaced lasted for over 13 years, so I hope these last half as long !!! Brilliant products, excellent service......running out of superlatives ! Thank you Safelincs.

Published on: 8th February 2014

5 / 5 Stars

Reviewed by: KF

Prompt reliable service

Published on: 28th January 2014

5 / 5 Stars

Reviewed by: PM

Excellant and timely delivery. Would order from this company again.

Published on: 8th January 2014

5 / 5 Stars

Reviewed by: JK

We thought we had been sent the wrong style at first, then realised the back plate needed to come off. After that it fitted quickly and easily. Hopefully it will never need to be used in anger!

Published on: 31st December 2013

5 / 5 Stars

Reviewed by: JP

Excellent product.

Published on: 15th November 2013

4 / 5 Stars

Reviewed by: TG

An excellent easily installed replacement for my 17yr old Ei151.

Published on: 23rd September 2013

5 / 5 Stars

Reviewed by: JB

5 STARS Plus Excellent product as the replacement is so easy Just push in. For 10years service GREAT

Published on: 30th August 2013

5 / 5 Stars

Reviewed by: JS

great service and quick delivery of a product that is easy to install and works efficiently

Published on: 19th August 2013

4 / 5 Stars

Reviewed by: SB

Fast service, product easy to install

Published on: 14th August 2013

5 / 5 Stars

Reviewed by: JH

Product arrived promptly and no problems with usage.

Published on: 4th August 2013

4 / 5 Stars

Reviewed by: PS

it was very good

Published on: 21st June 2013

5 / 5 Stars

Reviewed by: JH

Easy to install - have bought 2 recently

Published on: 10th June 2013

5 / 5 Stars

Reviewed by: SR

Simple to fit, easy to use.

Published on: 9th June 2013

5 / 5 Stars

Reviewed by: ZN

Easy to fit, fast delivery, would buy from again. I bought this to replace an existing Alarm with non working battery. Really easy to swap, took about 5 mins inc getting the ladder! Good installation Instructions. Fast delivery.i will buy another from this seller when the other alarm fails.

Published on: 1st June 2013

5 / 5 Stars

Reviewed by: JH

Replaced the same smoke alarm that was there foe the last 13 years so an excellent product

Published on: 27th May 2013

5 / 5 Stars

Reviewed by: GL

Easy to fit and works perfectly you can't get better than that.

Published on: 24th May 2013

5 / 5 Stars

Reviewed by: JH

Simple & fast like for like replacement continues product effective use.

Published on: 23rd May 2013

4 / 5 Stars

Reviewed by: SG

Happy with product - no problems so far.

Published on: 19th May 2013

4 / 5 Stars

Reviewed by: JK

Perfect fit to replace the old ones

Published on: 18th May 2013

5 / 5 Stars

Reviewed by: JB

Telephone sales advice very helpful in choice of product.

Published on: 14th May 2013

5 / 5 Stars

Reviewed by: SH

excellent service

Published on: 6th May 2013

5 / 5 Stars

Reviewed by: AB

met all expectations

Published on: 3rd May 2013

5 / 5 Stars

Reviewed by: PK

Reliable product that can save lives

Published on: 29th April 2013

5 / 5 Stars

Reviewed by: RC

excellent

Published on: 29th April 2013

5 / 5 Stars

Reviewed by: JW

A good product delivered very promptly

Published on: 29th April 2013

4 / 5 Stars

Reviewed by: IB

Exact replacement for an original alarm

Published on: 29th April 2013

5 / 5 Stars

Reviewed by: KT

Published on: 27th January 2013

Customer didn't leave a rating

Reviewed by: BP

was also good after first been replace after 15 year.

Published on: 24th January 2013

3 / 5 Stars

Reviewed by: -

Published on: 16th November 2012

5 / 5 Stars

Reviewed by: -

It would good to be able to buy a replacement battery rather than have to throw away the whole unit.

Published on: 30th October 2012

5 / 5 Stars

Reviewed by: -

Extremely easy to replace the old units, clear instructions, tool to help. Last unit lasted 17 years, not bad for an alarm designed to last for 10!

Published on: 23rd October 2012

4 / 5 Stars

Reviewed by: -

See above comments. The products lasted about 10 years which we think is pretty good. They have been reliable and with the stickers to remind us when they need replacing it should be easy next time too. It was useful to receive the opening tool as well, a nice touch.

Published on: 4th October 2012

5 / 5 Stars

Reviewed by: -

Published on: 23rd September 2012

5 / 5 Stars

Reviewed by: -

Published on: 20th September 2012

5 / 5 Stars

Reviewed by: -

REPLACEMENT OF EXISTING ITEM.

Published on: 9th September 2012

4 / 5 Stars

Reviewed by: -

Published on: 15th August 2012

Customer didn't leave a rating

Reviewed by: -

Excellent product, never caused a problem. Easy to remove and refit.

Published on: 2nd August 2012

5 / 5 Stars

Reviewed by: -

Published on: 28th July 2012

5 / 5 Stars

Reviewed by: -

Published on: 16th July 2012

5 / 5 Stars

Reviewed by: -

Published on: 18th June 2012

5 / 5 Stars

Reviewed by: -

Published on: 30th April 2012

Customer didn't leave a rating

Reviewed by: -

excelleny

Published on: 29th April 2012

5 / 5 Stars

Reviewed by: -

Needed to contact you regarding the wiring - I have suggested to Aico that they clarify the use of the white wire

Published on: 26th March 2012

5 / 5 Stars

Reviewed by: -

Published on: 29th February 2012

5 / 5 Stars

Reviewed by: -

Published on: 23rd February 2012

Customer didn't leave a rating

Reviewed by: -

I replaced old EI 150 units with the EI 151TL, and it could not have been easier. The base plates were the same, as were the plug fittings, and they just slotted straight in. The units are easy to use, and monitor, also being very efficient, and not hyper sensitive ( burning toast !!!). Life cycles of this model are stated as 10 years, however our previous EI 150 models only stopped working after 18 years..... hence the need for replacement. So they also very good value for money.

Published on: 21st December 2011

4 / 5 Stars

Reviewed by: -

Published on: 20th December 2011

5 / 5 Stars

Reviewed by: -

Published on: 15th November 2011

5 / 5 Stars

Reviewed by: -

Published on: 24th October 2011

5 / 5 Stars

Reviewed by: -

Published on: 17th October 2011

5 / 5 Stars

Reviewed by: -

Published on: 10th October 2011

4 / 5 Stars

Reviewed by: -

Correct OE replacement part supplied with full instructions and very easy to fit.

Published on: 20th September 2011

5 / 5 Stars

Reviewed by: -

Published on: 16th September 2011

5 / 5 Stars

Reviewed by: -

Published on: 8th September 2011

5 / 5 Stars

Reviewed by: -

Previous units were over 15 years old and we never had any problems until now, the battery no longer held its charge, however the unit is so reliable I have replaced them with the same product. Safety is important so it is a product we can trust will do it role in an emergency.

Published on: 3rd September 2011

5 / 5 Stars

Reviewed by: -

I've had one of these smoke alarms for many years and, although it has never been used in an emergency, appears when tested to function year after year.

Published on: 27th June 2011

5 / 5 Stars

Reviewed by: -

Simple to replace my previous model which was 7 years old.

Published on: 13th June 2011

5 / 5 Stars

Reviewed by: -

Replacement Smoke Alarm Kit was very easy to instal. Just unplug the old one and plug in the new. Very Happy.

Published on: 19th May 2011

5 / 5 Stars

Reviewed by: -

Published on: 4th May 2011

5 / 5 Stars

Reviewed by: -

Simple to install.

Published on: 19th April 2011

5 / 5 Stars

Reviewed by: -

Simple to install and up and running instantly

Published on: 13th February 2011

5 / 5 Stars

Reviewed by: -

Excellent service and as a direct replacement for my old ones very easy to fit

Published on: 30th December 2010

5 / 5 Stars

Reviewed by: -

Published on: 4th December 2010

5 / 5 Stars

Reviewed by: -

Exact information was given to replace the Ei150

Published on: 21st November 2010

5 / 5 Stars

Reviewed by: -

Replacement unit for earlier model. Fitting no problem. Test and found no problems

Published on: 13th October 2010

5 / 5 Stars

Reviewed by: -

Published on: 20th September 2010

Customer didn't leave a rating

Reviewed by: -

So good, so far. Touch wood.

Published on: 11th September 2010

Customer didn't leave a rating

Reviewed by: -

Both installed and working without problem. They replace 15-year old EI151 units that were part of the house when built in 1995 so the wiring was already in place.

Published on: 2nd September 2010

5 / 5 Stars

Reviewed by: -

Published on: 31st August 2010

Customer didn't leave a rating

Reviewed by: -

Clear installation instructions.

Published on: 30th August 2010

4 / 5 Stars

Reviewed by: -

First class product

Published on: 5th June 2010

5 / 5 Stars

Reviewed by: -

Published on: 24th May 2010

Show All Reviews

Delivery Options

The following delivery options are available on this product.

Economy Delivery

Delivered in 2-3 working days by Royal Mail from £3.90 ex VAT - More info

Next Day Delivery

Delivered the next working day by UK Mail from ex VAT - More info

For delivery on order within

Replacing an old alarm?

Why not use one of our fully certified replacement kits? - More info

Ei151 smoke alarm battery replacement

Play Video
Run Time: 01:54

Replace an Ei151 ionisation smoke alarm

Play Video
Run Time: 01:53

Remove an Ei151 ionisation smoke alarm

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Run Time: 01:12

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

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Direct Telephone 01507 464181
Direct Email Email Now
Tel: 0800 612 6537
Email: support@safelincs.co.uk