Tri-Tronics Companion - Manual (Page 21)

RADIO SIGNAL ISSUES
Operating Code. The operating code for the
Companion is a two-letter code found on the Owner’s
Registration Reply Card, and is also located inside the
transmitter battery compartment. The operating code
tells you whether your Companion and any other
Tri-Tronics Remote Trainer could interfere with each
other and cause each other to produce unwanted
stimulation. They can interfere only if they have
identical two-letter codes. There are 200 separate
two-letter codes, so such interference is very rare.
Also, several series of Tri-Tronics Remote Trainers do
not have two-letter operating codes at all, because they
use a different radio system. No interference resulting
in unintended stimulation is possible between such
units and the units, such as the Companion, that have
two-letter operating codes.
Other Interference Issues. Occasionally other sources
of RF (radio frequency) interference generate competing
signals that can cause a Remote Trainer not to activate
at all, even though the stimulation button is being
pressed. When this type of interference occurs, the
decoding electronics in your collar will cause it to
not activate at all. If this happens, wait a few moments
and try again. Also try moving the transmitter closer
to the collar.
Page 19 Companion