The Ei200MRF is an add-on RadioLINK⁺ module that simply plugs in at the back of a an Ei208W/DW Carbon Monoxide Alarm. It is powered by its own lithium battery ensuring power for life for both Alarm and module. 

It is a short range device using a transceiver to transmit, receive and repeat the RadioLINK protocol creating a robust "mesh" of RF signals and reliable paths of communication.  The Ei200MRF module facilitates wireless interconnection with up to 12 RadioLINK/RadioLINK⁺ devices.

The house coding feature confines the RF communication to designated RadioLINK/RadioLINK⁺ devices only, thereby avoiding the inadvertent activation of neighbouring Alarm RF systems.

The new RadioLINK⁺ technology enables you to put a whole system in house code mode by just pressing the button of one of the RF module of the existing system, making it much easier to add a device.