Mains Powered Optical Smoke Alarm with Alkaline Back-up Battery - Aico Ei146e
The Ei146e mains powered optical smoke alarm from EI Electronics is the upgrade to the Ei146RC detector. The new model features a sleek new design, sealed insect mesh, and automatic dust compensation for improved resistance to false alarms. Full backward compatibility with all devices used with the previous versions, including the Ei1529RC remote control switch and Ei168RC wireless base, means adding it to an existing Ei140/160/3000 system or replacing an old alarm is quick, easy, and reliable.
- Power: 230V mains powered with back-up battery
- Backup Battery: 9V alkaline battery (included)
- Warranty: 5 year warranty
- Supplied with Easi-Fit base for quick installation by your electrician
- Alarm head can be used to replace an old Ei146 or Ei146RC model without replacing the base
- All the new technology is in the detector head
- Keep your new base as a spare
- Interlink up to 12 units in a single system via 3 core cable
- Part of the new E Series also featuring the Ei144e heat alarm
- Kitemarked to
- Suitable for installations complying with
- CE marked
- Hush button for false alarm control
- Separate mains and warning LED indicators
- Supplied with fixings; 2 x screws and 2 x rawl plugs
- This alarm is also suitable for both the Welsh and Scottish updated 2022 legislation
Customer Reviews (82)
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.
Reviewed by
J F
Published on
11th May 2026
Reviewed by
A C
Published on
21st April 2026
Easy to install.
Reviewed by
M G
Published on
21st April 2026
Following order delivered within 24 hours, excellent service.
Reviewed by
C W
Published on
16th April 2026
perfect as it fits the base so no need to do any electrical work
Reviewed by
I P
Published on
14th April 2026
Easy to install and not had any issues re ‘false beeping’.
Technical Data
| Product Code | EI146E |
|---|---|
| Brand | EI Electronics |
| Back-Up Battery Type | Alkaline |
| Battery Type | 9V Battery |
| British Standard Grade | Grade D2: Mains Powered (replaceable backup) |
| Colour | White |
| Local Legislation | Scottish Legislation (2022) |
| Welsh Legislation (2022) | |
| Approvals & Markings | CE Marked |
| Compliance | BS 5839-6 |
| BS EN 14604: 2005 | |
| Connection | Wired |
| Display | LED Indicators |
| Fixing Options | Screws (included) |
| Installation Position | Ceiling |
| Material | Plastic |
| Maximum Number of Linked Devices | 12 Devices |
| Operating Temperature | -10°C To +40°C |
| Positioning | Bedrooms |
| Hallways | |
| Living Rooms | |
| Power Type | Mains Powered (230V) |
| Product Range | Aico Ei140e Series |
| Recyclable | Yes - Valpak's WEEE Distributor Take-back Scheme |
| Relative Humidity | 15% To 95% |
| Sensor Type | Optical |
| Sound Level | 85dB |
| Suitability | Home |
| Warning Type | Audible - Alarm Sounder |
| Warranty | 5 Years |
| Dimensions (Unit) |
|
| Weight | 350g |
| Datasheets |
Interlink
| Product Code | Description | Interlink Type |
| Ei140 Series | Mains Powered with Alkaline Back Up Battery | |
| Ei144e | Heat Alarm | Hardwire Interlink |
| Ei146e | Smoke Alarm | Hardwire Interlink |
| Ei144eRF | Heat Alarm | Hardwire / Radio Interlink |
| Ei146eRF | Smoke Alarm | Hardwire / Radio Interlink |
| Ei160 Series | Mains Powered with Lithium Back Up Battery | |
| Ei164 | Heat Alarm | Hardwire Interlink |
| Ei166 | Smoke Alarm | Hardwire Interlink |
| Ei164RF | Heat Alarm | Hardwire / Radio Interlink |
| Ei166RF | Smoke Alarm | Hardwire / Radio Interlink |
| Ei3000 Series | Mains Powered with Sealed Lithium Back Up Battery | |
| Ei3014 | Heat Alarm | Hardwire Interlink |
| Ei3016 | Smoke Alarm | Hardwire Interlink |
| Ei3018 | Carbon Monoxide Alarm | Hardwire Interlink |
| Ei3024 | Smoke & Heat Alarm | Hardwire Interlink |
| Ei3028 | Heat & Carbon Monoxide Alarm | Hardwire Interlink |
| Ei3014RF | Heat Alarm | Hardwire / Radio Interlink |
| Ei3016RF | Smoke Alarm | Hardwire / Radio Interlink |
| Ei3018RF | Carbon Monoxide Alarm | Hardwire / Radio Interlink |
| Ei3024RF | Smoke & Heat Alarm | Hardwire / Radio Interlink |
| [link:listing1377]Ei3028RF[/link] | Heat & Carbon Monoxide Alarm | Hardwire / Radio Interlink |
| Ei600 Series | 10 Year Sealed Lithium Battery | |
| Ei650RF | Smoke Alarm | Radio Interlink |
| Ei630iRF | Heat Alarm | Radio Interlink |
great product. excellent to be able to use original base.