Ei650iRF Optical Smoke Alarm

The Ei650iRF is a battery operated optical smoke Alarm designed to quickly sense all domestic fire types.


  • High performance optical sensor
  • Wireless interconnect
  • Automatic dust compensation
  • AudioLINK data download
  • Fault hush and diagnostics features
  • 10 year sealed Lithium battery
  • Easy install twist-on base
  • Large easy to use Test/Hush button
  • Alarm ramp up in Test mode
  • Specific fault led
  • Records previous alarm activation
  • Integrated piezoelectric sounder



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The Ei650iRF optical Smoke Alarm is fitted with a proprietary photoelectric sensor to quickly sense low energy smoke particles. This optical Alarm is sensitive to all domestic fire types but is especially sensitive to smoldering fires. 

The Ei650 range features a high performance optical chamber protected by a sealed mesh screen to reduce insect and dust contamination and EMC protection to reduce false alarms.  In addition, the Ei650iRF has an automatic dust compensation feature reducing further the risk of false alarms caused by dust build up.

The Ei650iRF communicates wirelessly via its preinstalled Ei600MRF RadioLINK+ module with compatible Ei Electronics Alarms and accessories.  Up to 12 RF devices can be interconnected.

The AudioLINK feature facilitates acoustic download of the Alarm parameters and status using the Ei Electronics AudioLINK app.

For better hearing comfort, the sound level of the alarm increases progressively in Test mode. The Test button can also be used to silence nuisance alarms (e.g. cooking fumes) for a 10 minute period and fault beeps for 12 hours (low battery and sensor fault).

The Ei650iRF self-checks its chamber sensor, battery voltage and internal circuitry every 40 seconds.  Any fault condition found will be indicated by a combination of Yellow LED flashes and sound beeps.

The Ei650iRF is designed with advanced diagnostics to help pre-warn of possible impending fault conditions.

The Alarm has a twist on mounting base which has multiple fixing points so it can be easily installed.  The alarm is not powered until it is twisted onto the mounting base, thus avoiding battery power consumption during storage and prior to installation.

Sensor Type:


Product Life:

10 years

Supply voltage:

3V Lithium Battery (non replaceable)

RF Frequency:

868Mhz band (1% duty cycle)

RF Power:


RF Range:

>100m in free air

Protocol Type:

Mesh architecture

RF Protocol:


System size: 

Up to 12 RF devices

Sound Level:

85dB(A) at 3m (except in Test mode)

Button Test:

Checks sensor, electronics, battery and horn

Silence function:

Silences alarm for 10 minutes

Silences fault beeps for 12hrs

Data download:

Via the AudioLINK app

Advanced diagnostic:


Visual indicators:

·         Red LED: On power up, alarm, hush mode and memory

·         Yellow LED: On power up and fault

·         Blue LED: RF transmission

Memory Feature:

·         Red LED flashes twice/16s for the 1st 24hrs after the event. After 24hrs, the Alarm will beep when the test button is pressed instead of sounding loudly.

Insect Screen:

Fine mesh

Normal Operating and Storage Temperature Range: 

-10°C to 40°C

Normal Operating and Storage Humidity Range: 

15% to 95% relative humidity


Screw fixings and mounting plate supplied



Product - 115mm x 45mm

Package - 150mm x 120mm x 56mm


·         210g (pack +50g)


5 years

Product Manual

Product Datasheet