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  • Aico Ei420 RadioLINK Repeater Module Mains Powered to Boost Range
  • Aico Ei420 RadioLINK Repeater Module Mains Powered to Boost Range
  • Aico Ei420 RadioLINK Repeater Module Mains Powered to Boost Range
  • Aico Ei420 RadioLINK Repeater Module Mains Powered to Boost Range

Aico Ei420 RadioLINK Repeater Module Mains Powered to Boost Range

Web Price (inc. VAT) £50.39

Part Number: Ei420

Stand-alone unit designed for use with RadioLINK enabled alarms and accessories.
Quantity Qty

For Trade Discounts, please contact us.


Description Full Description

Ei420 RadioLINK Repeater is a stand-alone repeater module designed for use with RadioLINK enabled alarms and accessories, for use in installations that require additional signal coverage but where the installation of an additional alarm may not be suitable.  It is designed to be remotely sited and comes complete with its own cover.

It runs on 230V AC mains power and has built-in tamper-proof rechargeable Lithium cells that act as a battery back-up in the event of mains failure. These rechargeable Lithium cells are designed to have a minimum 10 year life and outlast the life of the module itself.

The module uses advanced transceiver and signal coding technology to ensure robust and reliable RF signalling.

Operation of the Ei420 RadioLINK Repeater

Received RadioLINK signals will be re-transmitted, increasing the possible number of barriers penetrated by the signal and contributing to multiple signal paths throughout the system.
The unit can be ‘House Coded’ by activating the ‘House Code’ switch. The indicator will flash red to indicate the number of units ‘learned’.
The indicator will illuminate green to show that mains power is present (this is overridden by any red flashes).
If the rechargeable back-up is depleted, the indicator will flash red every 10 seconds to indicate they need recharging.

Technical Specification:

  • Compatible with RadioLINK enabled alarms and accessories.
  • Requires 230V AC mains power supply – Constant green LED indicates mains power is present.
  • Features built-in tamper-proof rechargeable vanadium pentoxide lithium standby cells, capable of lasting at least 10 years and powering the base initially for at least 2 months in the event of mains power failure. The cell manufacturer endorses a minimum 10-year life expectation for the rechargeable cells, which are activated by operating the battery switch inside the base.
  • Low back-up warning signal – LED indicator flashes red every 10 seconds to indicate that the lithium cells are depleted.
  • When installed, the unit will receive RadioLINK signals and re-transmit them. This can be useful in providing multiple RF signal paths to strengthen the RadioLINK system in difficult installations.
  • Radio Frequency: 868MHz band in accordance with R&TTE Directive 1999/5/EC – This band has been designed for use with security products and only allows a 1% duty cycle, so continuous transmission and interference from external sources is extremely remote, and would be illegal.
  • Range: The type of building will be the major limiting factor e.g. the number and type of walls/ceilings that the radio signal has to pass through. As a guide, 3o metres should be the maximum distance between any of the RadioLINK units in the system.
  • Up to 20 RadioLINK units can be used in one system.
  • Units are in factory code mode when received (they will all communicate with each other). They must be ‘House Coded’ to eliminate the risk of adjacent properties communicating with each other. After ‘House Coding’ they will only communicate with other RadioLINK units coded at the same time.
  • House Code: Operate the ‘House Code’ switch on all RadioLINK units in the system. The green LED on the cover of the Ei420 will change to red and flash slowly, this indicates that it will receive the unique serial numbers being sent by all other RadioLINK units in ‘House Code’. The number of flashes of the LED indicates the number of units in the system. The Ei420 will return to normal standby mode automatically after 30 minutes . Pressing the ‘House Code’ switch again will return it to normal standby immediately.
  • A RadioLINK Manual Call Point, Ei407 and remote control switches, Ei450,Ei412, and Ei411H, are also available for use in the system.
  • The rpdocut is CE marked to indicate conformance to BS EN60065:1998 (Electrical Safety), EN300220-1 V1.3.1 (2000-09) (RF Performance), EN301489 V1.4.1 (2002-08) (EMC) and has been 3rd party tested for electrical safety in accordance with Annex K of BS 5446: Part 1: 2000.
  • Features 1 x 25mm trunking for surface wiring and centre knockout for recess wiring.
  • Ambient Temperature Range: 4°C to 40°C. Humidity Range: 0 to 90% relative humidity.
  • Dimensions: 140mm diameter x 27mm depth.
  • Weight inclusive of packaging: 220g.
  • 5 year guarantee.
  • Manufactured in Ireland.

Key Points:

  • Power Supply: 230 V AC
  • Battery Back-up: Rechargable lithium battery
  • Battery life: >10 Years (normal operating conditions)
  • Temperature: Operating 4°C to 40°C Humidity range: 0% to 90% Relative
  • Humidity Indicator Lights: Green - Power Red - House Code mode, Low battery
  • Communication: RadioLINK protocol
  • RF frequency: 868.499 MHz
  • Plastic material: UL94HB
  • Dimensions: Product - 140mm x 27mm Package - 145mm x 145mm x 30mm
  • Weight: 220g (including packaging)
  • Warranty: 5 year (limited) warranty
  • Approvals: (RF) EN 300 220-3 (EMC) EN 301 489-3 

Delivery - Despatch
Orders placed on Monday to Friday before 15:00 will be picked and packed for despatch on the next available working day where items are in stock (So far this year 96% of our orders have been despatched the same working day).

Orders placed over the weekend or on public holidays will be processed on the next working day (although we can often arrange Saturday and special late despatches - just give us a call).

Delivery - Costs
Orders over £50 (Inc VAT) warrant a free delivery.

 1-2 Working days

  2-3 Working days

  3-5 Working Days

          England, Wales 
       Southern Scotland
 Southern & Northern Ireland
       Scottish Highlands
 Channel Islands, Isle of Man
       UK Offshore Islands




Orders over £50 (Inc VAT) FREE

Orders over £180 (Inc VAT) FREE

Orders over £210 (Inc VAT) FREE

Our delivery methods are:

UK Royal Mail - standard delivery @ £5.99
Orders will be despatched via Royal Mail 1st Class. The parcel will not be tracked and does not require a signature at the time of delivery. Usually takes 1-2 days for delivery.

Next (Working) Day Delivery 
This option can be selected on products marked 'Available for Next Day Delivery'. If this option is chosen and the order is completed before 15:00 it will be despatched on the same day and usually delivered within 1-2 working days - providing your item is in stock.

You will receive an email confirming receipt of your order together with a tracking code if coming via DHL  - so you can follow the progress of your order or reschedule delivery.

DHL is the largest express carrier and package delivery company in the UK - so you can be sure your goods are in safe hands. The parcel will require a signature at the time of delivery.

*Free delivery is not available for orders to Northern Ireland. 

We offer a 14 Day cooling off period. If for any reason you are not completely delighted with your purchase you may download a Returns Form and return it within 14 days of receipt for a full refund or exchange (For the same item only).

Delivery costs back to us are not refundable unless there is a fault/damage with the item and it is reported within 28 days of receipt. If that is the case then please contact our sales team on 0330 900 9103. 

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Ryness Electrical Supplies Ltd, Unit 5B Sovereign Way, Botany Trading Estate, Tonbridge, Kent, TN9 1RH -