Nomadio Sensor User Manual page 16

Now, every time you turn on the Sensor and set it to the appropriate model ID (see "Managing
Models" later in this manual), the Sensor goes to a special "lookup channel" and searches for
messages from the appropriate VIN.
When you turn on the vehicle's transceiver, the transceiver goes to the lookup channel and
broadcasts i t s VIN so i t can be found by the appropriate Sensor.
When the Sensor finds the appropriate VIN, the connection is made. The Sensor then searches
for a clear frequency channel; when one is found, the Sensor "tells" the transceiver to jump to
that clear frequency channel.
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