Specifications

RADIOLINK
Frequently Asked Questions
12
It is a totally new concept enabling smoke alarm systems to be
interconnected without the need for cabling between the alarms.
Instead, a radio signal is used to trigger all the alarms in the system.
The Ei141, Ei144, Ei146, Ei161RC, Ei164RC and Ei166RC smoke and heat alarms
can all be used with an Ei168 base to make a RadioLINK system. These all
require a mains supply to them.The Ei405 and Ei405TY are battery operated
alarms, these contain all the RF components and do not require the use of
an Ei168RC base.
The Ei168RC RadioLINK base requires a mains supply to each of the
alarms in the system. The power supply can be taken from any
convenient light pendant, with a permanent live feed, to where the
alarm is to be sited. The Ei405 and Ei405TY don’t require any cabling as
they are battery powered, but they will not be suitable for use in new
build and most tenanted properties.
There are significant savings to be made, mainly in time, but also in materials.
a) There is no need to feed the wiring from one alarm to another. This
can be very time consuming and can cause problems with tenants
not wanting to have trunking running up walls and across ceilings.
There is no need to lift floorboards either. Both of these points mean
that damage claims to floors, carpets and decoration are minimised,
if not eliminated.
b) Less cable and trunking is required so further reducing costs.
A radio signal is sent when the test button is pressed, or the alarm senses
smoke. This is received by all the RadioLINK alarms in the system and
they will also sound.
The frequency and duration of the RF signal used by the Ei RadioLINK
system meets strict European guidelines. These are designed to virtually
eliminate interference. Interference cannot be completely ruled out but
it is our experience that hard wired cable connections are far more
likely to be affected by interference than RadioLINK will be.
There have been problems with doorbells using RF causing interference
with other doorbells of the same type. These problems were mainly due
to there being only a few codes available that the user could choose
from. This made it very easy to select a code that was used by a
neighbour. The consequence was that when one doorbell was pressed,
a number of them sounded! This cannot happen with RadioLINK
because each alarm base has a unique code that is set at the factory.
The code cannot be repeated so interference is eliminated.
1. What is
RadioLINK?
2. Which alarms
can be used
with RadioLINK?
3. Do I have to
wire the alarms
at all?
4. What benefit
is there in
RadioLINK if I
still have to
connect the
to the mains?
5. How can the
alarms
interconnect
without a cable
connection?
6. Will
interference
from other RF
devices be a
problem?