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Radio-Interlinked Longlife Battery Powered Optical Smoke Alarm - Ei605TYCRF

Discontinued Product

This product has been discontinued.

alternative product

Ei650RF 10 Year Wireless Optical Alarm

  • Battery: Built-in, lasts the lifetime of your alarm
  • Warranty: 5 year warranty
  • Wirelessly interlinks via radio frequency with up to 12 alarms
  • Twist-on base, simple to install
  • LED function indicators
  • Suitable for BS 5839-6: 2019 Grade F1 installations
  • Certified to BS EN 14604: 2005
  • Also suitable for the 2022 Scottish legislation

£112.99 inc VAT

£94.16 ex VAT

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Product Overview
The Ei605TYCRF is a battery powered radio-interlinked optical smoke alarm. The alarms can be wirelessly interlinked with up to 11 other units and the modern finish ensures that these detectors never look out of place and are suitable for modern installations. 
  • Battery powered smoke alarm - sealed longlife lithium battery
  • 5 year warranty
  • Up to of 12 radio-interlinked smoke alarms or heat alarms can be installed
  • RF range 150 metres (minimum) in free space and up to 30 metres in buildings
  • Built-in radioLINK repeater function allows for the RF signal to work around obstructions
  • VdS approved to BS EN 14604:2005
  • Suitable for installations complying to BS 5839-6: 2013 Grade F
  • CE marked
  • LED power indicator
  • Low battery warning
  • With test and hush button
  • Requires no cables between units and no power supply
  • Can interlink with all other EI radio-interlinked alarms
  • Digitally coded to avoid interference with neighbouring systems
  • Supplied with fixings; 2 x screws and 2 x rawl plugs

The table below shows all the units that can interlink with the EI603TYCRF.

Alarms from the Same Series
Model Number
Type of unit
Type of interlink
Ei650RF Battery powered optical alarm Radio-interlinked
Ei603TYCRF Battery powered heat alarm Radio-interlinked
Compatible Alarms
Model Number
Type of unit
Type of interlink
Ei161eRF Ionisation Smoke Alarm Radio-interlinked using the Ei100MRF module
Ei164eRF Heat Alarm Radio-interlinked using the Ei100MRF module
Ei166eRF Optical Smoke Alarm Radio-interlinked using the Ei100MRF module
Ei2110eRF Multi Sensor Smoke & Heat Alarm Radio-interlinked using the Ei100MRF module
Ei168RC/141RC Mains powered ionisation alarm (Alkaline back up) Radio-interlinked using the Ei168RC base
Ei168RC/144RC Mains powered heat alarm (Alkaline back up) Radio-interlinked using the Ei168RC base
Ei168RC/146RC Mains powered optical alarm (Alkaline back up) Radio-interlinked using the Ei168RC base
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
Ei412 Wireless Fire and CO Alarm Control Switch Radio-interlinked
Ei450 Wireless Fire and CO Alarm Controller Radio-interlinked
Technical Data
Product Code EI605TYCRF
Alternative Product Codes Ei605, Ei605RF, Ei650RF
Brand EI Electronics
Battery Type

Longlife Lithium

Dimensions (HxDia)


Operating Temperature

0 to 40°C

Relative Humidity

0% to 90% Relative Humidity

Sound Output


Weight 0.20kg
Product Datasheets
FAQs (8)
Q. Do the Ei600 series alarms need 230v or do they just use battery?

The Ei600 series of radio-interlinked alarms are completely battery operated. This means that they do not need to be wired up to the mains circuit. On the website, we offer the Ei600 series with a standard 9v battery or with a 10 year lithium longlife battery. The standard 9V batteries last approximately 12-18 months depending on how often the detectors are tested. The lithium battery units are sealed and last 10 years i.e. the full lifespan of the detector.

Q. Where more than one radio-interlinked battery operated smoke alarm is installed, if the battery in one alarm failed would the other alarms be affected?

If one alarm was to malfunction the other units would not be affected, if it was due to alarm failure. If the fault was with the radio-interlinking signal, then all alarms that are in the chain after the faulty alarm would be affected and they would not go off.

Q. Do I need to take out all the batteries in my radio-interlinked alarms before adding a new alarm into the system?

No, you do not need to remove all the batteries. Just simply press the house code button on all the units. Please ensure that the batteries have full power as this could render the house code process incomplete.

Q. What is the difference between Ei605TYCRF and Ei605CRF smoke alarms, can both be used with the EI412 remote control panel?

The Ei605TYCRF comes with a ten year lithium battery, this should last for the life span of the alarm. The Ei605CRF comes with an alkaline battery that will need to be changed every 12 months. As these alarms are part of the Ei600 series they are both compatible with the Ei412.

Q. Do the radio interlinked units give out a constant signal all the time and does this decrease the battery life more than a non-interlinked alarm?

Yes, radio interlinked alarms are periodically sending and receiving signals from other units in the network and therefore the life of the battery is reduced. Units with alkaline batteries should have the batteries are changed annually [unless they are fitted with a sealed 10 year battery as eg in the Ei600RF series].

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Customer Reviews

7 customers have given this product an overall rating of 4.4 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:

Recommended the use of these before and now I have bought them myself.

Published on: 2nd May 2017

Rating: 5 / 5 Stars

Reviewed by:

very good

Published on: 15th February 2017

Rating: 5 / 5 Stars

Reviewed by:

Easy to fit, slightly tricky to set up, but works well.

Published on: 28th October 2016

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