10
►Video Connection
Connect with BNC coaxial cable.
►
Alarm input
Signal
Description
IN COM
Common point for alarm
IN1-,IN2-,IN3-, In4-,
Alarm input signal
Speed dome can detect the status of alarm input (NO or NC) automatically.
Normal Open and Normal Close define as below
Normal Open
No contact between alarm input and common point
Normal Close
Keeping contact between alarm input and common point