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Mains Powered Radio-Interlinked Optical Smoke Alarm with Alkaline Back-up Battery - Ei146RF

13 in stock Expected dispatch: 2nd Jun
5 Customer Reviews
€78.00 ex VAT
€95.94 inc VAT
Product Overview
This mains powered Radio-interlinked optical smoke alarm does not require any cable to connect with other Ei140 series smoke alarms and is ideal for extensions, small let properties and small businesses.
  • Mains powered radio-interlinked smoke alarms as a variation of the Ei146 optical smoke alarm
  • Each unit consists of a radio-frequency base-plate and the Ei146 optical smoke alarm sensor
  • Alkaline backup batteries (included)
  • Requires no cables between units
  • Can be powered from the nearest light fitting
  • 5 year warranty
  • A maximum of 12 units can be interconnected including:
    - Ei168RC/Ei141RC, Ei168RC/Ei144RC
  • Kitemarked to BS EN 14604:2005
  • 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
  • Requires no cables between units 
  • 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/Ei146RC.

Compatible Alarms
Model Number
Type of unit
Type of interconnection
Ei168RC/141RC Mains powered ionisation smoke alarm Radio-interlinked using the Ei168RC base
Ei168RC/144RC Mains powered heat alarm Radio-interlinked using the Ei168RC base
Ei3100RF Battery powered ionisation smoke alarm Radio-interlinked
Ei3103RFU Battery powered heat alarm Radio-interlinked
Ei3105RF Battery powered optical smoke alarm Radio-interlinked
Carbon Monoxide Alarms
Model Number
Type of unit
Type of interconnection
Ei262 Mains powered CO detector Radio-interlinked
Ei208WRF Battery 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
Ei450 Wireless Fire and CO Alarm Controller Radio-interlinked
Technical Data

Technical Data

This is the technical data for the Mains Powered Radio-Interlinked Optical Smoke Alarm with Alkaline Back-up Battery - Ei146RF.

Product Code EI168RC146RC
Weight 0.52kg
Back-Up Battery 9V Alkaline
Sound Output 85dB (minimum) at 3m
Temperature Range 0°C to 40°C
Humidity Range 15% to 95% Relative Humidity
Dimensions (HxDia) 50x152mm
FAQs (6)
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?

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.

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?

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?

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. Do the Ei168RC/146 optical Smoke alarms conform to UK building regulations for a loft installation?

The Ei140 series mains powered radio-interlinked smoke detectors conform to BS5839 part 6 Grade D standard. Grade D refers to a system incorporating mains powered detectors that are interconnected by wire or radio-signal. For a loft conversion, it is common that you have to conform to a Grade D standard. It is always advisable to check which grade alarm your Building Inspector has specified.

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Pricing & Availability

Model Stock Price
Product Code: EI168RC146RC Stock Level:
13 in stock Expected dispatch: 2nd Jun

€78.00 ex VAT

€95.94 inc VAT

Customer Reviews

5 customers have 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: 5 / 5 Stars

Reviewed by:


Published on: 23rd September 2015

Rating: 5 / 5 Stars

Reviewed by:

Very pleased with the product. Excellent service. Extremely helpful staff. Thank you.

Published on: 6th April 2014

Rating: 5 / 5 Stars

Reviewed by:

Did what it said on the tin!

Published on: 17th December 2013

Rating: 4 / 5 Stars

Reviewed by:

Published on: 30th June 2011

Customer didn't leave a rating

Reviewed by:

does exactly as it says on the box

Published on: 9th February 2011

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