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Mains Radio-Interlinked Smoke Alarm based on Ei160

Ei161 - Radio-Interlinked Ionisation Smoke Alarm
Ei161 - Radio-Interlinked Ionisation Smoke Alarm
£68.39 ex VAT
£82.07 inc VAT
Ei166 - Radio-Interlinked Optical Smoke Alarm
Ei166 - Radio-Interlinked Optical Smoke Alarm
£74.99 ex VAT
£89.99 inc VAT
Ei164 - Radio-Interlinked Heat Alarm
Ei164 - Radio-Interlinked Heat Alarm
£81.19 ex VAT
£97.43 inc VAT
Total From:
£68.39 ex VAT
£82.07 inc VAT

The Ei160RC series of mains powered radio-interlinked alarms contain a sealed lithium back up battery that lasts the life of the alarm. Supplied with a radio-frequency base plate with a 30m signal range, up to 12 Ei160RC radio-interlinked smoke and heat alarms can be wirelessly connected within one system. Unlike traditional wired connection systems, the radio-interlinked alarms save time, cost and mess during installation, and the sealed lithium battery stops attempts of battery removal.

  • 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 base-plate and the Ei160 series alarm sensor
  • Re-chargeable lithium battery backup guaranteed for 10 years
  • Requires no cables between units
  • Can be powered from the nearest light fitting
  • Ideal for extensions, new build, small let premises and small businesses
  • Available in three alarm sensor versions
    • Ionisation: best for landings
    • Optical: best for hallway, living rooms and bedrooms
    • Heat detector: best for kitchen and garage
  • Each unit can transmit up to 30m indoors
  • Built-in radioLINK repeater function allows for the RF signal to work around obstructions
  • Units are programmed to recognise other units in the same circuit 
  • A maximum of 12 alarms can be interconnected
  • Features test and hush button facility and LEDs to show correct power supply
  • Made by Ei Electronics in Ireland
  • 5 year warranty
  • Also available:

The table below shows all the units that can interconnect with the EI168RC/Ei160RC series.

Alarms from the Same Series
Model Number
Type of unit
Type of interconnection
Ei168RC/Ei161 Ionisation Smoke Alarm Radio-interlinked using the Ei168RC base
Ei168RC/Ei164 Heat Alarm Radio-interlinked using the Ei168RC base
Ei168RC/Ei166 Optical Smoke Alarm Radio-interlinked using the Ei168RC base
Compatible Alarms
Model Number
Type of unit
Type of interconnection
Ei605TYCRF Optical Alarm Radio-interlinked
EI603TYCRF Heat Alarm Radio-interlinked
Ei168RC/Ei2110 Multi Sensor Smoke & Heat Alarm Radio-interlinked using the Ei168RC base
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

Wiring Explained

The radio interlinked Ei160 series of alarms require a 230V AC mains power supply to each unit. Up to 12 alarms can be wirelessly interconnected 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 interconnection. Please see the diagram below:-


This is the technical data for the Mains Radio-Interlinked Smoke Alarm based on Ei160.

Dimensions (HxDia) Ionisation: 54x150mm
Heat: 78x152mm
Optical: 64x150mm
Multi-Sensor: 78x152mm
Back-Up Battery 10 year sealed lithium cell
Sound Output 85dB (minimum) at 3m
Temperature Range 0 to 40°C
Humidity Range 15% to 95% Relative Humidity

Technical Data Sheets

The following technical data sheets are available for this product:

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. 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. 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. I need to connect my EI160 alarms wirelessly to my sprinkler system so that if the sprinkler activated, it would send a signal to my alarms to sound. What can I use

A. You would connect the EI408 switched input to the sprinkler system which would activate the EI168 wireless base to sound the alarms

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Pricing & Availability

Model Stock Levels Prices Weight
Ei161 - Radio-Interlinked Ionisation Smoke Alarm
Product Code: EI168RC161RC
In Stock

£68.39 ex VAT

(£82.07 inc VAT)


Ei166 - Radio-Interlinked Optical Smoke Alarm
Product Code: EI168RC166RC
In Stock

£74.99 ex VAT

(£89.99 inc VAT)


Ei164 - Radio-Interlinked Heat Alarm
Product Code: EI168RC164RC
In Stock

£81.19 ex VAT

(£97.43 inc VAT)


Customer Reviews

Reviewed by:
Good product but don't do what I did This review also applies to the other 3 alarms I purchased. I have a rental property with two mains interlinked alarms and I needed to add two more. To avoid wiring I bought two long life lithium models and replaced the two existing ones with these mains Radio Interlinked models. I wired them into the existing circuit (including wired interlink) and also enabled the radio interlink. All seemed to work fine and the initial test worked fine. However, just before leaving I pressed the test button again and they all went off - but wouldnt stop. It was deafening and it just went on and on. I had to remove all the alarms and reset them to stop it. I guessed that the problem was caused by the fact that the two mains alarms were linked by both wire and radio so I removed the wire link and re-installed them on radio alone. This time it worked OK. A call to safelincs support confirmed that this was likely to be the case as a feedback loop can occur under these circumstances.
Reviewed by:
Excellent See my review of EI168RC161RC
Reviewed by:
Reviewed by:

Not Rated

Reviewed by:
Simple and fast to install. Configuration was easy. These were purchased to install on a job where the main Contractor forgot about the smoke alarms and by this time the walls and ceilings were plastered. This solution was ideal as we just took power from the nearest 3-plate pendant and followed the instructions to connect via radio link.

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