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Mains Powered Heat Alarm with Lithium Back-up Battery - Ei164RC

Discontinued Product

This product has been discontinued.

Product Overview
Mains powered heat alarm from EI complete with hush button and 10 year rechargeable lithium cells.
  • 10 year Rechargeable Lithium Cell back-up  
  • Available in two versions:
  • 5 year warranty
  • A maximum of 12 units can be interconnected via 3 core interconnection cable
  • Other alarms that can be interconnected include:
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • Kitemarked to BS 5446-2:2000
  • CE Marked
  • Fixed temperature fast response thermistor type sensor range 54° - 62° C
  • Hush button for false alarm control
  • Separate mains and warning LEDs for easier identification of alarm status
  • Auto self-test feature continually monitors the sensor every 40 seconds for additional safety
  • Precision charging circuit ensures peak cell performance
  • Low power cell LED warning in the event of a mains or cell failure

The table below shows all the units that can interconnect with the EI164RC.

Compatible Alarms
Model Number
Type of unit
Type of interconnection
Ei161RC Ionisation Alarm Hard wire using 3 core interconnection cable
Ei166RC Optical Alarm Hard wire using 3 core interconnection cable
EI2110 Multi Sensor Smoke & Heat Alarm Hard wire using 3 core interconnection cable
Ancillary Products
Model Number
Type of unit
Type of interconnection
Y03 Multi Frequency Sounder Hard wire using 3 core interconnection cable
MCP401RC Manual Call Point Hard wire using 3 core interconnection cable
Ei1529RC Smoke alarm Locate, Hush and Remote test switch Hard wire using 3 core interconnection cable
Technical Data
Product Code

Ei164EK Replacement Detector Head Kit:  EI164RCEK

Ei164 Heat Alarm:  EI164RC

Brand EI Electronics
Back-Up Battery

Longlife Lithium Battery

Dimensions (HxDia)


Operating Temperature

0°C to 40°C

Relative Humidity

15% to 95% Relative Humidity

Sound Output


Weight 0.25kg
Product Datasheets
FAQs (5)
Q. How can we test the alarm to make sure it is working?

The manufacturer's recommendation is to test the alarm by pressing the test button. This will simulate a heat input at the heat sensor. You can also test it with a hair dryer but make sure that the hairdryer is kept away at a suitable distance from the alarm. Do not attempt to test the alarm by using open fire or excessive heat as this may damage the unit.

Q. How do you wire in the Ei140/Ei160 series of smoke alarms?

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?

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.

Q. My detector does not have "RC" stated at the end of the code. What does this stand for?

The RC just refers to "Remote Control" as the unit can be fitted to a radio-frequency base for interconnection. The model hasn't changed but the manufacturers changed the product code slightly in reference to this.

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?

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.

Customer Reviews

5 customers have given this product an overall rating of 5 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:

Very good service and easy to fit

Published on: 25th July 2016

Rating: 5 / 5 Stars

Reviewed by:

Does what it says on the tin

Published on: 7th February 2016

Rating: 5 / 5 Stars

Reviewed by:

Replacement of an out of date heat alarm, easily installed.

Published on: 11th December 2015

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