Close Please note: We are currently experiencing problems with our telephone system and some customer calls may not get through to us.
Please contact us using our online chat system or via email

Your Basket has 0 items

Goods Total: 0.00 inc VAT


0800 612 6254

Mains Powered Combined Optical Smoke and Heat Alarm with Lithium Back-up Battery - Ei2110

In Stock
61.43 inc VAT
51.19 ex VAT
Product Overview
The Ei 2110 is a multi-sensor fire alarm that contains two separate sensing elements optical and heat detection. As the unit monitors two different by-products of fires (smoke and temperature), its response to all types of fire is vastly improved over traditional single sensor alarms. It is also less prone to false alarms.
  • Suitable for living rooms, bedrooms, hallway, landings (not suitable for kitchen or garage)
  • 230V Hard-wired smoke and heat alarm
  • Multiple sensor elements - optical and heat detectors
  • Unique dust compensation feature (The alarm automatically adjusts for any contamination within the optical sensor chamber)
  • Kitemarked to BS EN 14604:2005
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • CE Marked
  • 5 year guarantee
  • Tamper-proof rechargeable 10 year lithium battery back-up
  • Advanced suppression and calibration technology reduces risk of false alarms to absolute minimum
  • Low battery warning
  • Test/Hush button
  • Easy-fit base
  • A maximum of 12 units can be interconnected
  • Supplied with fixings; 2 x screws and 2 x rawl plugs
  • Alarms that can be interconnected with include:
  • Remote control capability using the Ei1529RC

The table below shows all the units that can interconnect with the EI2110.

Compatible Alarms
Model Number
Type of unit
Type of interconnection
Ei161RC  Ionisation Alarm Hard wire using 3 core interconnection cable
Ei164RC Heat Alarm Hard wire using 3 core interconnection cable
Ei166RC  Optical Alarm Hard wire using 3 core interconnection cable
Ancillary Products
Model Number
Type of unit
Type of interconnection
Y03  Multi Frequency Sounder Hard wire using 3 core interconnection cable
MCP401RC Manual Call Point Hard wire using 3 core interconnection cable
Ei1529RC Smoke alarm Locate, Hush and Remote test switch Hard wire using 3 core interconnection cable

Wiring Explained

The Ei2110 multi-sensor alarm requires a 230V AC mains power supply. Up to 12 Ei2110 and Ei160 series of alarms can be hard wire interconnected on one circuit.

To obtain a mains feed, the first alarm can be connected to the nearest lighting circuit using 2 core and earth cable. From this alarm, 3 core and earth cable is required for all additional alarms, which allows for the hard wire interconnection to work. Please see the diagram below:-


Alternatively, the alarms can be hard wired using a dedicated circuit from the distribution board.

Technical Data

This is the technical data for the Mains Powered Combined Optical Smoke and Heat Alarm with Lithium Back-up Battery - Ei2110.

Product Code EI2110
Weight 0.32kg
Dimensions (HxDia) 64x147mm
Back-Up Battery 10 year sealed lithium cell
Sound Output 85dB (minimum) at 3m
Temperature Range 0C to 40C
Humidity Range 15% to 95% Relative Humidity

Technical Data Sheets

The following technical data sheets are available for this product:

FAQs (7)

Q. For mains powered Aico smoke and heat alarms, when the electricity supply fails and the back up battery takes over, please can you tell me how long the battery will last in this situation?

A. For mains powered Aico alarms with a new, fully charged lithium back up battery, the battery would last approx. 3-6 months without a mains supply. For mains powered Aico alarms with a standard alkaline back up battery, the battery would last up to a year without mains supply. If the alarm has been installed with an Ei168RC radio frequency base, please note that the Ei168RC back up battery would last approx 2 months if the power fails.

Q. Does this alarm conform to BS 5446 part 1 as recommended by the Fire Service?

A. This recommendation has been superseded by BS 14604:2005. All of our smoke and heat alarms conform to this standard in accordance with the Kitemark.

Q. Can the mains powered smoke alarm range be connected to mains power via the lighting circuit?

A. Yes, hard-wired mains powered alarms can be wired to the unswitched live feed of the nearest frequently used lighting circuit.

Q. Does the Ei2110 multi sensor model need to be fitted by a qualified electrician?

A. We would always recommend a qualified electrician to fit these mains powered smoke alarms for you .

Q. What sort of smoke alarm system would I need to install for a HMO?

A. BS 5839-6 recommends that one or two storey HMOs with an individual floor area of no more than 200sqm (not the total of both floors) should have a Grade D smoke alarm system installed. Grade D refers to mains powered smoke alarms with a back up battery power supply. The alarms can be interlinked either by wire or by radio signal and the system does not require a separate fire alarm panel. For HMOs of 3 storey or higher, a Grade A panel system would need to be installed. This can cover the whole of the building, or can be used just for the communal areas with a separate Grade D system installed for the individual dwellings. For both applications, the level of cover should be a minimum of LD3 (in all escape routes) but this may change according to the fire risk assessment.

Show all FAQs

Pricing & Availability

Model Stock Levels Price Weight
Product Code: EI2110
In Stock

61.43 inc VAT

51.19 ex VAT


Customer Reviews

20 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: ES

excellent product and service.

Published on: 14th July 2016

5 / 5 Stars

Reviewed by: JB

Excellent Quality Product Easy To Retro Fit. Great Product And Great Service.

Published on: 28th June 2016

5 / 5 Stars

Reviewed by: SL

Good product Easy to fit and offers good range of coverage

Published on: 28th April 2016

5 / 5 Stars

Reviewed by: GL

Neat unit which works well.

Published on: 7th December 2015

5 / 5 Stars

Reviewed by: JD

Delivery service very good. Easy to fit and works well in tandem with another alarm

Published on: 26th July 2015

5 / 5 Stars

Reviewed by: JD

Excellent product. Delivered on time. Easily installed and working well

Published on: 3rd July 2015

5 / 5 Stars

Reviewed by: DH

Well made, good value, excellent alarm.

Published on: 7th November 2014

5 / 5 Stars

Reviewed by: AM

Easy to fit and very helpful customer service on the best product to buy for my circumstances My previous smoke alarm used to go off constantly, triggered by steam, even when doing the ironing. This one has proved to work only when needed, when I burnt the toast!

Published on: 6th April 2014

5 / 5 Stars

Reviewed by: PS

Simple to install discrete fortunately not been activate yet!

Published on: 14th February 2014

5 / 5 Stars

Reviewed by: NC

Good value

Published on: 8th January 2014

4 / 5 Stars

Reviewed by: AD

Looks good works well no problems with insallation.

Published on: 16th December 2013

5 / 5 Stars

Reviewed by: NC

very good service fram safelincs and alarm is exactly what i was looking for

Published on: 12th November 2013

5 / 5 Stars

Reviewed by: RJ

No more false alarms Situated in my lounge near the kitchen the old alarm used to go off all the time. Problem solved with this new model. Slim profile and easy to test. Very happy with this.

Published on: 8th November 2013

4 / 5 Stars

Reviewed by: KM

Easy to fit looks good great multi sensor unit

Published on: 2nd November 2013

5 / 5 Stars

Reviewed by: GF

Tidy looking, robust design with impressive longevity After shopping around for ages, reading up on all the different options of detectors out there. I spoke with Safelincs staff in an IM chat on a few occasions and they really reassured me in my choices and where knowledgeable and helpful. Although having shopped about they are not the cheapest out there, it was their customer service that made me purchase from them above their competitors.

Published on: 23rd September 2013

4 / 5 Stars

Reviewed by: MB

Well designed sensor, but not ideal near showers! I bought this as a step up from my ionisation sensor which triggered most times we cook in the adjacent kitchen. We now have less cooking related alarms, but the shower is also adjacent and is now the lead culprit! Great easily exchanged design, link system and rechargeable battery makes this easy maintenance.

Published on: 28th June 2013

5 / 5 Stars

Reviewed by: RH

great service. really good explanations over the phone from Zeb Hemmings.

Published on: 29th April 2013

4 / 5 Stars

Reviewed by: AN

Published on: 23rd January 2013

4 / 5 Stars

Reviewed by: -

Published on: 22nd July 2012

5 / 5 Stars

Reviewed by: -

Published on: 22nd June 2012

Customer didn't leave a rating

Reviewed by: -

Very easy to fit and instructions clear

Published on: 23rd August 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 4.68 inc VAT - More info

Next Day Delivery

Delivered the next working day by UK Mail from 7.80 inc VAT - More info

For delivery on order within

Looking for more information?

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

Live Support Not Available
Direct Telephone 01507 464181
Direct Email Email Now
Tel: 0800 612 6254