6. LIMITATIONS OF RADIO COMMUNICATIONS
Ei Electronics radio communication systems are very reliable and are tested to high
standards. However, due to their low transmitting power and limited range (required
by regulatory bodies) there are some limitations to be considered:
(i) Radio equipment, such as the Ei168
RadioLINK
Base, should be tested regu-
larly at least weekly. This is to determine whether there are sources of interference
preventing communication. The radio paths may be disrupted by moving furniture
or renovations, and so regular testing protects against these and other faults.
(ii) Receivers may be blocked by radio signals occurring on or near their operating
frequencies, regardless of the house coding.
The Ei168
RadioLINK
Base has been tested to EN 300 220-1 V1.3.1 (200-09) in
accordance with the requirements of EN 300 220V1.1.1 (2000-09). These tests are
designed to provide reasonable protection against harmful interference in residen-
tial installations. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio and television reception.
However, there is no guarantee that interference will not occur in a particular instal-
lation. If this device does cause such interference, which can be verified by turning
the device on and off (remove both the mains and turn off backup power supplies),
the user is encouraged to eliminate the interference by one or more of the follow-
ing measures:
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