User's Manual

11
Parameter
Description
the light sensor, and we recommend keeping it default.
Saturation
The larger the value, the thicker the color.
Gamma
Changes the picture brightness and improves the picture
dynamic range in a non-linear way. The larger the value, the
brighter the image.
Gain
Adjustment
Amplify the video signal to increase image brightness. If the
value is too large, there will be more noise in the image.
Mirror Display the image with left and right side reversed.
Flip Display the image upside down.
Display Time Display the current time and date on the video image.
Audio
Control
Voice Prompt
Sound
Turn on or off each type of sound.
Ringback
Sound
Adjust the volume as needed.
Alarm
Leave
Messages
Unlock
Audio
Collection
Volume
Control
Microphone
Volume
Speaker
Volume
Access Control Settings
This section introduces how to configure the two locks connected to the lock port or the RS-485
port of the VTO.
4.3.1 Local
Select Local Settings > Access Control Settings.