PLANET ICA-HM120 - Manual (Page 77)

Explanation of External I/O Circuit Diagram:
CAUTION! 9 The low voltage/current circuits and high voltage/current circuits are in the IP
camera circuit. The qualified electrician should do the wring not by yourself
incorrect wiring could damage IP camera. You could receive the fatal electric
shock.
9 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 IP camera may result if a
device is connected to the external I/O that exceeds its electrical capability.
76