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Mains Powered Optical Smoke Alarm with Alkaline Back-up Battery - Aico Ei146

4.7 out of 5 stars
£29.99 inc VAT
£24.99 ex VAT
Product Overview

Mains powered optical smoke alarm from EI, available as a replacement smoke alarm detector head or complete with mounting base plate. This is the latest Ei146"RC" detector - now capable of interlinking with the Ei1529RC remote control switch. The Ei146RC replaces the previous Ei146 model but can still be used to extend and interlink to an existing Ei140 system.

  • Power: 230V mains powered with back-up battery
  • Backup Battery: 9V alkaline battery (included)
  • Warranty: 5 year warranty
  • Available in two versions:
    • Ei146RC optical smoke alarm with Easi-fit base for quick installation (for new installations by a qualified electrician)
    • Replacement Ei146 optical smoke alarm detector head (supplied without base)
  • A maximum of 12 units can be interlinked via 3 core cable
  • Other smoke alarms that can be interlinked include:
  • Kitemarked to BS EN 14604: 2005
  • Suitable for installations complying to BS 5839-6: 2019 Grade D2
  • CE marked
  • Hush button for false alarm control
  • Low battery LED indicator
  • Separate mains and warning LEDs
  • Supplied with fixings; 2 x screws and 2 x rawl plugs
  • This alarm is also suitable for the updated 2022 Scottish legislation for fire alarms in homes

Please Note: The simple installation process of the easichange replacement kit negates the need of an electrician.

Interlink

The table below shows all the units that can interlink with the EI140 series.

Smoke and Heat Alarms

Model Number
Type of Unit
Type of Interlink
Ei3014 / Ei3014RF Mains Powered Heat Alarm - Sealed Lithium Hardwire Interlink
Ei3016 / Ei3016RF Mains Powered Optical Smoke Alarm - Sealed Lithium Hardwire Interlink
Ei3024 / Ei3024RF Mains Powered Optical & Heat Alarm - Sealed Lithium Hardwire Interlink
Ei3028 / Ei3028RF Mains Powered Heat & Carbon Monoxide Alarm - Sealed Lithium Hardwire Interlink
Ei2110e / Ei2110eRF Mains Powered Multi Sensor Smoke & Heat Alarm - Sealed Lithium Hardwire Interlink
Ei161e / Ei161eRF Mains Powered Ionisation Smoke Alarm - Sealed Lithium Hardwire Interlink
Ei164e / Ei164eRF Mains Powered Heat Alarm - Sealed Lithium Hardwire Interlink
Ei166e / Ei166eRF Mains Powered Optical Smoke Alarm - Sealed Lithium Hardwire Interlink
Ei141 / Ei168RC141RC Mains Powered Ionisation Alarm - 9V Alkaline Hardwire Interlink
Ei144 / Ei168RC144RC Mains Powered Heat Alarm - 9V Alkaline Hardwire Interlink
Ei146 / Ei168RC146RC Mains Powered Optical Smoke Alarm - 9V Alkaline Hardwire Interlink

Carbon Monoxide Alarms

Model Number
Type of unit
Type of interlink
Ei3018 / Ei3018RF Mains Powered Carbon Monoxide Alarm - Sealed Lithium Hardwire Interlink
Ei3028 / Ei3028RF Mains Powered Heat & Carbon Monoxide Alarm - Sealed Lithium Hardwire Interlink
Ei261 Mains Powered Carbon Monoxide Alarm - Sealed Lithium Hardwire Interlink

Ancillary Products

Model Number
Type of unit
Type of interlink
MCP401RC Mains Powered Manual Call Point Hardwire Interlink
Ei1529RC Mains Powered Locate, Silence & Test Control Switch Hardwire Interlink
Ei159 Mains Powered Smoke Alarm Locator Switch Hardware Interlink
Ei128R Mains Powered 5A Relay Module Hardwire Interlink
Ei128RBU Mains Powered 5A Relay Module with Lithium Backup Battery Hardwire Interlink
Y03 Mains Powered Multi Frequency Sounder Hardwire Interlink (via relay)
SAB300C Mains Powered Flashing Xenon Strobe (Clear) Hardwire Interlink (via relay)
SAB300R Mains Powered Flashing Xenon Strobe (Red) Hardwire Interlink (via relay)

Wiring Explained

Mains powered Ei Electronics smoke and heat alarms require a 230V AC power supply and up to 12 alarms can be hardwire interlinked in one system.

To obtain a mains power supply, each alarm can be connected to the nearest lighting circuit using 2 core and earth cable with a separate, dedicated interlink cable connecting all alarms. However, if possible it is recommended that the alarms are all powered from a dedicated circuit from the distribution board using 3 core and earth cable for safety during maintenance, as the interlink cable will carry power from live alarms on other power circuits. Please see the diagram below:-

Wiring Mains Powered Alarms

Technical Data
Product Code
Ei146EK Replacement Kit (Detector Only) EI146EK
Ei146RC Optical Smoke Alarm (Detector + Base) EI146RC
Brand EI Electronics
Back-Up Battery

9V Alkaline

Dimensions (HxDia)

50x152mm

Operating Temperature

0°C to +40°C

Relative Humidity

15% to 95%

Sound Output

85dB

Warranty

5 Years

Weight

EI146EK: kg

EI146RC: 0.345kg

Product Datasheets
FAQs (7)
Q. Which interconnecting smoke alarms would be suitable to connect an upstairs landing, downstairs hallway and a kitchen?
A.

The Ei 140 series with radio-interlink bases would be suitable for this application:
Ei168RC/141 ionisation: best for landings
Ei168RC/146 optical: best for hallway, living rooms etc
Ei168RC/144 heat detector: best for kitchen and garage
Alternatively the Ei160 series (again with radio-interlink bases):
Ei168RC/161RC ionisation: best for landings
Ei168RC/166RC optical: best for hallway, living rooms etc
Ei168RC/164RC heat detector: best for kitchen and garage
There are also battery operated radio-interlinked smoke alarms available (See Ei3100RF and Ei600RF series)

Q. What type of electrical cable is required to carry the mains supply and trigger signal for the wired alarms?
A.

For the mains supply of the first unit a 2-core earth cable would be sufficient. For the connection between the alarms a 3-core earth cable would be required

Q. Can I link a CO detector with a Ei140 smoke alarm?
A.

Yes, we recommend the Ei261EN. You should also install a Ei159 locator to allow you to find out if the alarm was triggered by CO gas or by fire.

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. Can I upgrade an existing Ei140 series base with an Ei3000 series alarm?
A.

Yes, the new Ei3000 series is fully backward compatible and will work directly with the the Ei140 series base. Both the power supply and the interlink with any remaining Ei140 alarms will continue to work with your new Ei3000 alarm.

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Pricing & Availability

Model Stock Price
Ei146RC Optical Smoke Alarm (Detector + Base)
Product Code: EI146RC
Stock Level:
More than 20 in stock Expected dispatch: 2nd Aug
Price:

£29.99 inc VAT

£24.99 ex VAT

Ei146EK Replacement Kit (Detector Only)
Product Code: EI146EK
Stock Level:
More than 20 in stock Expected dispatch: 2nd Aug
Price:

£29.99 inc VAT

£24.99 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.79 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£7.91 inc VAT - Orders will be delivered in 1-2 working days by DHL

Customer Reviews

42 customers have given this product an overall rating of 4.7 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: 4 / 5 Stars

Reviewed by: K M

Easy to install but cant really say how good it is until it is needed, which I hope is never

Published on: 7th December 2020

Rating: 5 / 5 Stars

Reviewed by:

Easy to fit direct replacement for old smoke alarm.

Published on: 19th January 2018

Rating: 5 / 5 Stars

Reviewed by:

Worked "out of the box" no issues

Published on: 15th January 2018

Rating: 5 / 5 Stars

Reviewed by:

Like, does what I need A

Published on: 7th August 2017

Rating: 5 / 5 Stars

Reviewed by:

Excellent product

Published on: 4th July 2017

Rating: 4 / 5 Stars

Reviewed by:

all as expected.

Published on: 12th June 2017

Rating: 5 / 5 Stars

Reviewed by:

Finally got what I wanted from an excellent supplier. Manufacturer was far from helpful in giving me a supplier and I could not find any local suppliers, but Safelincs came to the rescue!

Published on: 28th May 2017

Rating: 4 / 5 Stars

Reviewed by:

Suitable Should it have come with the battery already connected?

Published on: 18th April 2017

Rating: 5 / 5 Stars

Reviewed by:

Excellent

Published on: 8th February 2017

Rating: 5 / 5 Stars

Reviewed by:

Easy install and smart appearance

Published on: 6th December 2016

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