TECNOMOTOR 810 Manual Operativo página 61

2.4 Connecting the probes: temperature and rpm
The inputs for connecting the probes
(optional) are visible on the back side
of the instrument.
In particular, the socket connector
marked with the symbol "°C" will be
used to connect the temperature
probe, and the connector marked with
"RPM" will be used to connect the
rs232 type inductive clamp or
M.C.T.C.NET revolution counter.
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