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Mains Powered Radio-Interlinked Ionisation Alarm with Lithium Back-up Battery - Ei161RF

In Stock
£68.39 ex VAT
£82.07 inc VAT
Product Overview
This mains powered Radio-interlinked ionisation smoke alarm has a 10 year rechargeable lithium backup battery. The alarm does not require any cable to connect to other units and is ideal for extensions, small let properties and small businesses.
  • Mains powered radio-interlinked smoke alarms as a variation of the Ei161 ionisation smoke alarm
  • Each unit consists of a radio-frequency base-plate and the Ei161ionisation smoke alarm sensor
  • Requires no cables between units
  • Can be powered from the nearest light fitting
  • Re-chargeable lithium battery backup guaranteed for 10 years
  • 5 year warranty
  • Can be interlinked with heat and optical alarms 
  • A maximum of 12 alarms can be interconnected including:
    Ei168RC/EI164, Ei168RC/Ei166, Ei168RC/Ei2110
  • Kitemarked to BS EN14604:2005
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • CE marked
  • With test and hush button
  • LED display to show correct power supply
  • Can transmit up to 30m in buildings
  • Built-in radioLINK repeater function allows for the RF signal to work around obstructions

The table below shows all the units that can interconnect with the EI168RC/Ei161RC.

Compatible Alarms
Model Number
Type of unit
Type of interconnection
Ei168RC/Ei164RC Mains powered heat alarm Radio-interlinked using the Ei168RC base
Ei168RC/Ei166RC Mains powered optical smoke alarm Radio-interlinked using the Ei168RC base
Ei168RC/Ei2110 Mains powered multi sensor smoke & heat alarm Radio-interlinked using the Ei168RC base
Ei605TYCRF Battery powered optical alarm Radio-interlinked
EI603TYCRF Battery powered heat alarm Radio-interlinked
Carbon Monoxide Alarms
Model Number
Type of unit
Type of interconnection
Ei208WRF Battery powered CO detector Radio-interlinked
Ei262 Mains powered CO detector Radio-interlinked
Ancillary Products
Model Number
Type of unit
Type of interconnection
Ei407 Wireless Manual Call Point Radio-interlinked
Ei411H Wireless Locate, Hush and Remote test switch Radio-interlinked
Ei412 Wireless Fire and CO Alarm Control Switch Radio-interlinked
Ei450 Wireless Fire and CO Alarm Controller Radio-interlinked
Technical Data

This is the technical data for the Mains Powered Radio-Interlinked Ionisation Alarm with Lithium Back-up Battery - Ei161RF.

Product Code EI168RC161RC
Weight 0.45kg
Back-Up Battery Longlife Lithium Battery
Sound Output 85dB (minimum) at 3m
Temperature Range 0 to 40°C
Humidity Range 15% to 95% Relative Humidity
Dimensions (HxDia) 50x150mm

Technical Data Sheets

The following technical data sheets are available for this product:

FAQs (5)

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. Please could you explain how the repeater function works on the Aico/Ei radio interlinked detectors.

A. Hello. The radioLINK repeater function allows the smoke alarm to "repeat" the radio frequency signal around obstructions. This stops the signal from becoming blocked and ensures that all interlinked alarms can be reached. This repeater function is built-in to the the Ei168RC radioLINK base (with Ei140, Ei160 or Ei2110 alarm), the Ei600 series of radio interlinked battery powered smoke and heat alarms as well as the Ei262 and Ei208WRF carbon monoxide alarms as standard. When house coded, the system works itself out which alarms are to act as repeaters - it's not something you set up yourself.

Q. I have added an Ei168RC164RC wireless linked heat detector to my garage some time after the installation of various other wireless Ei160 detectors in the house. What do I have to do to get the system to recognise the new detector please?

A. To get the Ei168RC164RC to communicate with the existing alarms, you would need to housecode all the units again. Press the housecode button on the new Ei168RC base and on each of the existing units.

Q. How do you wire in the Ei140/Ei160 series of smoke alarms?

A. To wire the units correctly you would use 2 core and earth cable to the first unit and 3 core and earth to the interconnected units. The alarms do not have to be earthed but a brass screw connector is provided so that the earth can be safety terminated.

Q. Are there any restrictions to the distance a radio-interlinked smoke alarm will work?

A. Most radio-interlinked alarms have a range of 150 meters in an open space and up to 30 meters in buildings. The thickness of the walls and partitions will affect the travel distance of the signal.

Pricing & Availability

Model Stock Levels Price Weight
Product Code: EI168RC161RC
In Stock

£68.39 ex VAT

£82.07 inc VAT


Customer Reviews

3 customers have rated this product and it has an overall rating of 4.3 out of 5

All our reviews are written by real customers that have purchased this product from us. We publish all customer reviews, even the bad ones!

5 / 5 Stars

Reviewed by: SP

Easy to install

Published on: 15th September 2014

3 / 5 Stars

Reviewed by: -

Published on: 18th July 2012

5 / 5 Stars

Reviewed by: -

Published on: 12th May 2012

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