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If the type is NO, this button is normal open. The button becomes on when there is an alarm
output.
If the type is NC, this button is normal off. The button becomes off when there is an alarm output.
Figure 2-6 Alarm output
2.5.2 IR Light Connection
Note:
Device shall have external port for IR function.
Log in Web, select Setup -> Camera -> Day&Night, and select sensor input. If it is not
available, then you do need to set it.
Please refer to the following figure for external IR light information. See Figure 2-7.
IR synchronization input signal. When the external IR light is on, the signal cable from the board
outputs the 3.3V/1mA. It outputs the 0V when the IR light is off.
Figure 2-7 IR light connection
