Specifications

RADIOLINK
Frequently Asked Questions
13
Security systems may use the same frequency as the RadioLINK but they
will normally be on a different band and/or be restricted to using the
channel for 1% of the time, for a maximum of 4 seconds at any one
time. Also, the unique code used by RadioLINK units means that
interference is a very remote possibility. Car alarms and mobile phones
use a completely different frequency so interference is not possible from
either of these. Television remote controls mostly use infra-red, which
cannot affect the RadioLINK system.
The radio signal can travel a very long way if there are no obstructions
to block it – 250 metres or more. But, it is more relevant to consider the
practical application of RadioLINK where there will be walls, ceilings
and many other obstructions to impede the radio signal path. In the
vast majority of properties, where there will be 2 or 3 alarms, the signal
from a RadioLINK unit will be more than adequate. In fact, it is quite
probable that the radio signal will transmit well beyond the limits of the
property. This is a very important reason why the alarms in a property
must be ‘House Coded’ – see question 9.
Simply House Code each separate system of alarms. In this way they
cannot cause nearby alarms to sound.‘House Coding’ takes a
matter of minutes after installation of all the alarms in the system and
can be easily undertaken by anyone following the instructions supplied
with the product.
Yes, this is a big advantage in blocks of flats and HMO’s. In ordinary
hard-wired installations it is necessary to cross property boundaries with
mains cable in order to interlink the alarms (and provide the mains
power). This could pose an electrical safety risk if people working in the
dwelling were unaware that there are 2 mains power supplies to the
property. With RadioLINK each alarm in the system can be connected
to a local power supply, the interconnect signal is provided by the radio
signal, therefore overcoming this risk.
In flats and HMO’s where interconnection between dwellings is not
required, but a connection to the communal areas is (for early warning
purposes), it is easy to provide a simple, yet effective system. Simply,
‘House Code’ the alarms in each flat separately and then ‘House
Code’ the alarms in the communal areas with say a heat alarm in the
individual dwellings. In this way, if a nuisance alarm should occur within
one of the dwellings it will not affect the other residents. However, if a
real fire has occurred, the heat alarm in the dwelling will operate the
communal system – and all other dwellings – when sufficient heat has
been generated.
7. Will security
systems and
car alarms
affect the smoke
alarm system?
8. How far will the
radio signal
travel?
9. If all the alarms
can interlink how
can I stop the
next door
sounding the
ones in my house?
10.Can you use
RadioLINK to
interconnect
between as
well as within
properties?