JVC VN-T216U Instructions Manual page 9

For DC power supply use, make sure the popularity is
Caution
correct to avoid malfunction and/ or camera change.
Au. IN Audio in
GND
Au. OUT Audio out
GND
AL IN Alarm in
GND
COM Alarm out
AL OUT
DC12V
operate on DC12V /
AC24V
IP camera can
AC24V
8