U.S. Divers 150-2421 - Flatfoto 1.3-megapixel Digital Camera, Owner'S Manual

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6
THE TRANSMITTER
The compact transmitter module screws into a standard
7
/
16
" HP port. The transmitter automatically activates when
it senses pressure from the cylinder. Once activated, it
sends pressure information via a low frequency radio wave
to the wrist unit.
One of the unique features of the transmitter is that it
sends along a special code each time it transmits pressure
information. The computer "listens" to the code, and, if it is
the correct code, accepts the pressure information. This
feature allows more than one Monitor 3 Air system to be
used without information becoming mixed up, i.e. you
reading your dive buddy's air information.
The Transmitter