Mains Powered Radio-Interlinked Combined Optical Smoke and Heat Alarm with Lithium Back-up Battery - Ei2110eRF - Safelincs - Approved supplier for Ei Electronics
Basket (0) Checkout
FREEPHONE 0800 612 6254 Now FREE from UK mobiles

Mains Powered Radio-Interlinked Combined Optical Smoke and Heat Alarm with Lithium Back-up Battery - Ei2110eRF

19 in stock Expected dispatch: Tomorrow
£122.03 inc VAT
£101.69 ex VAT
Product Overview

This alarm is the radio-interlinked version of the Ei2110e, a multi-sensor fire alarm that contains two separate sensing elements – optical and heat. 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 and reduces the number of false alarms in the premises.

  • Kitemarked to BS EN 14604:2005 and CE marked
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • Each unit consists of a radio-frequency module and the Ei2110e alarm sensor
  • Suitable for living rooms, bedrooms, hallway, landings (not kitchen or garage)
  • 230V Hard-wired alarm with two sensors - optical smoke and heat
  • Re-chargeable lithium battery backup guaranteed for 10 years
  • Requires no cables between units
  • Can be powered from the nearest light fitting
  • A maximum of 12 alarms can be interlinked
  • Supplied RadioLINK module simply plugs into the back of the alarm
  • Built-in radioLINK repeater function allows for the RF signal to work around obstructions
  • RF range: 150 metres in free space and up to 30 metres in buildings
  • Alarms that can also be interlinked with include:
    - Ei161eRF, EI164eRF, Ei166eRF
  • Provides low battery warning and features a test/hush button facility
  • 5 year warranty
  • Unique dust compensation feature (the alarm automatically adjusts for any contamination within the optical sensor chamber)
  • Supplied with fixings; 2 x screws and 2 x rawl plugs

Please Note: These units use the radio-interlink frequency 868.499MHz. This bandwidth is restricted for safety products, therefore the chances of interference should be limited.


The table below shows all the units that can interlink with the Ei2110eRF.

Compatible Alarms
Model Number
Type of unit
Type of interlink
Ei650RF Battery powered optical alarm Radio-interlinked
EI603RF Battery powered heat alarm Radio-interlinked
Ei161eRF Mains powered ionisation alarm Radio-interlinked using the Ei100MRF Module
EI164eRF Mains powered heat alarm Radio-interlinked using the Ei100MRF Module
Ei166eRF Mains powered optical alarm Radio-interlinked using the Ei100MRF Module
Carbon Monoxide Alarms
Model Number
Type of unit
Type of interlink
Ei208WRF Battery powered CO detector Radio-interlinked
Ei262 Mains powered CO detector Radio-interlinked
Ancillary Products
Model Number
Type of unit
Type of interlink
Ei407 Wireless Manual Call Point Radio-interlinked
Ei411H Wireless Locate, Hush and Remote test switch Radio-interlinked
Ei450 Wireless Fire and CO Alarm Controller Radio-interlinked

Wiring Explained

The radio interlinked Ei2110 multi-sensor alarm requires a 230V AC mains power supply to each unit. Up to 12 Ei2110 and Ei160 series of alarms can be wirelessly interlinked by radio signal.

To obtain a mains feed, each alarm can be connected to its nearest lighting circuit using 2 core and earth cable. Please note that the separate lighting circuits must have a permanent live supply to all alarms. Radio frequency signals are then used for the wireless interlink. Please see the diagram below:-

Technical Data

Technical Data

This is the technical data for the Mains Powered Radio-Interlinked Combined Optical Smoke and Heat Alarm with Lithium Back-up Battery - Ei2110eRF.

Product Code EI2110ERF
Alternative Product Codes Ei2110, Ei2110e, Ei2110eRF
Weight 0.32kg
Back-Up Battery Rechargeable Lithium
Sound Output 85dB (minimum) at 3m
Temperature Range 0°C to 40°C
Humidity Range 15% to 95% Relative Humidity
Dimensions (HxDia) 152x50mm

Product Datasheets

The following datasheets 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. BS 5446-1:2000 was withdrawn in 2008 and replaced by BS EN 14604:2005 to conform with European standards. These alarms are fully compliant with BS EN 14604:2005.

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 Price Weight
Product Code: EI2110ERF Stock Level:
19 in stock Expected dispatch: Tomorrow

£122.03 inc VAT

£101.69 ex VAT


Delivery Options

The following delivery options are available on this product.

Economy Delivery

Delivered in 3-5 working days by Hermes £4.68 inc VAT

Next Working Day Delivery

Delivered the next working day by DHL £7.80 inc VAT

For dispatch today 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.

Direct Telephone 01507 464181
Direct Email Email Now



This site uses cookies to improve your experience and for essential functioning of the site. By continuing to use our site you agree to the use of cookies.

Change your cookie settings at any time by clicking on the button at the bottom of each page. Read more about the cookies we use in our Privacy Policy.

By continuing to browse this site you agree to the use of cookies. Learn more.