Ei408 RadioLINK Switched Input Module

The Ei408 sounds all the Alarms in an Ei Electronics RF system when it is activated by an external device.

  • 10 year lithium battery
  • Wireless Interconnect
  • Hardwire volt free input (NO)
  • Transmits RF alarm signal
  • Visual power, low battery and RF transmission indicator
  • Unique house coding feature

Compliant with Radio Equipment Directive 2014/53/EU

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The Ei408 is designed to transmit a RF alarm signal that will sound all the Alarms in the RF system on receipt of a volt-free switched hardwired signal from an external device (such as a sprinkler system) .

It is powered by a 10 year tamper proof lithium battery.

The Ei408 uses advanced radio transceiver technology with unique software coding to transmit the proprietary RadioLINK protocol. This ensures a robust “mesh” of RF signals and reliable paths of communication. The house coding feature confines the RF communication to designated devices only, thereby avoiding the inadvertent activation of neighbouring alarm RF systems.

A RF system consists of Ei Electronics Smoke, Heat, CO Alarms and accessory devices that are linked using a proprietary RF protocol. The Ei408 must be House coded to the other RF devices in the system.

Note: the Ei408 cannot be recess mounted or fitted to a metal back-box.

Important: Ei Electronics devices are not designed to fulfil the role of a critical component of a BS5839-1 system’s requirements such as sound pressure level in a property, or to form a necessary component of an evacuation or other life safety procedure.

Product Life:10 years
Supply Voltage:Lithium battery (non-replaceable)
Hardwire input:Volt Free contact (NO)
RF Frequency:868MHz band (1% duty Cycle)
RF Power:+4dBm
RF Range:> 100 Metres in free air
Protocol type:Mesh architecture
RF Protocol:RadioLINK
System size:Up to 12 RF devices
Visual indicators:3 colour LED:
Flashing Green – Power
Red - RF Communication
Flashing Yellow - Low battery
Normal Operating and Storage Temperature Range:-10°C to 40°C
Normal Operating and Storage Humidity Range:15 % to 95 % Relative Humidity
Plastic material:UL94VO Flame retardant
Fixings:Screw fixings and surface mount box supplied
Product: 88mm x 88mm x 42mm
Packaged: 90mm x 90mm x 50mm
Product only: 165g
Product + Packaging: 192g
Warranty5 years

Product Manual

Product Datasheet