Datalogic Scanning C-BOX 300 - Manual (Page 20)

C-BOX 300/310
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NOTE
Pin 1 is also electrically connected to pins 3 and 5, just as pin 2 is
electrically connected to pins 4 and 6. This is useful for external
trigger/inputs connections.
WARNING
Incorrect grounding of the C-BOX 3X0 can injure personnel and
damage equipment. Make sure that the C-BOX is correctly grounded.
NOTE
The C-BOX 3X0 is protected against polarity reversal, a red LED signals
this condition. When this condition occurs, all other C-BOX LEDs will be
off until the power feed is connected with correct polarity.
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