Overview about radio-interlinked smoke alarms

For several years Safelincs has been offering Ei Electronics’ radio-interlinked smoke alarm ranges. Occasionally, we receive requests for a more detailed overview about how the radio-linked smoke alarms are grouped, as there are quite a few different models. Here a brief overview of the different products available:

Radio-interlinked smoke alarms (Ei calls them RadioLINK smoke alarms) can be grouped into battery operated and mains powered models. Both the battery operated smoke alarm series Ei3100RF and Ei600  as well as the mains powered ranges of the Ei140, Ei160 and Ei2110 series offer wireless connection between smoke and heat detectors. The Ei140, 160 and Ei2110 series require a RadioLINK base unit (provided by Safelincs when you order these units) to radio-link the alarms while the battery operated units have the RF (radio frequency) module already integrated into the actual smoke alarm.

The purpose of radio-interlinked alarms is to ensure that when a smoke alarm detects a fire in one part of the building it notifies all the other alarms in the house per radio signal, triggering them to activate their sounders as well, hence notifying the occupiers of the building accross the entire building – and without the need for interconnecting cables.

The RadioLINK technology deployed by Ei Electronics is split into two categories:

1) Basic RadioLINK interconnection (models Ei3100RF as well as Ei140 with radio base): If one alarm goes off, all alarms go off. There is also the possibility to test the alarms with a remote test device and to use manual break points connected also with radio-interlink. However, the customer cannot for example silence or locate sounding alarms remotely. One alarm in such a system can act as a repeater to increase the reach of the network.

2) As above but with Remote Control Functionality (models Ei600 as well as Ei160 and Ei2110 with radio-base). Remote Control Functionality offers the possibility to remote test, hush and locate the alarms. Each smoke alarm unit can also act as a repeater, allowing these systems to cover larger buildings.

All of the above units can be ‘housecoded’, meaning that the smoke alarms will only communicate with alarms from the same group and not with your neighbour’s system. This is achieved through simple housecoding of the units when you install the alarms.

Where is the power-supply coming from?

The radioLINK units have different sources of power-supply:

Ei3100RF series: 9V block batteries, which need to be changed every year

Ei600 series: Sealed longlife batteries which will last the full ten year life of the smoke alarms

Ei140 series: Mains powered (usually from nearest light fitting) plus a 9V block battery as backup. Again, the 9V battery should be replaced every year.

Ei160 series  and Ei2110: Mains powered (usually from nearest light fitting) plus a re-chargeable, longlife lithum battery which will last the full ten year life of the smoke alarm.