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User Manual for the easichange 

Replacement Series:

Ei141EK - Ionisation 

Ei144EK - Heat 
Ei146EK - Optical

Ei161EK - Ionisation 

Ei164EK - Heat 
Ei166EK - Optical

Congratulations!

 You have purchased a genuine Easichange 

replacement smoke/heat alarm kit containing an OEM Ei 

Electronic alarm head.
This replacement kit contains everything you need to easily, 

quickly and safely replace your mains powered, Ei Electronics / 

Aico smoke or heat alarm.

Removing the Existing Alarm

1. Disconnect the mains power

Warning!

 Before the existing alarm is removed, the mains power 

must be disconnected.
Look on your mains distribution board for a switch marked 

“Smoke Alarms” or similar and switch this off. If there isn’t a 

switch marked with a recognisable label, switch the mains 

power off.

Note:

 This will cut power to everything in the house including 

the lights.

Checking the New Alarm

9. Checking the indicating lights

Once the new alarm has been
connected and the mains power has 

been restored it is important to check 

the indicating lights.
If the alarm is working correctly 

the 

GREEN LIGHT

 should be on 

constantly and the 

RED LIGHT

 

should flash once every 40 sec.

10. Testing the alarms

Press and hold the test button for 

10 seconds, the alarm should sound 

loudly.
If there are other connected alarms 

in the house these should also 

sound within 10 seconds of the test 

button being pressed.

Any Problems?

If you have any problems fitting your new alarm, please give us 

a call on: 

0800 612 6537 or email support@easichange.co.uk

Doc 1129 - V1.0

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