AVer SF1311H-B - Manual (Page 52)

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CAMERA. YOU COULD RECEIVE THE FATAL ELECTRIC SHOCK.
 THE EXTERNAL I/O IS NOT CAPABLE OF CONNECTING DIRECTLY TO DEVICES THAT
REQUIRE LARGE AMOUNTS OF CURRENT. IN SOME CASES, A CUSTOM INTERFACE
CIRCUIT (CUSTOMER PROVIDED) MAY HAVE TO BE USED. SERIOUS DAMAGE TO
NETWORK CAMERA MAY RESULT IF A DEVICE IS CONNECTED TO THE EXTERNAL I/O
THAT EXCEEDS ITS ELECTRICAL CAPABILITY.