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I
Foreword
General
This manual mainly introduces structure, installation, wiring and menu operations of the analog 4-wire
video intercom. Read carefully before using the device, and keep the manual safe for future reference.
Model
7-inch and 4.3-inch VTH
Safety Instructions
The following categorized signal words with defined meaning might appear in the manual.
Signal Words Meaning
DANGER
Indicates a high potential hazard which, if not avoided, will result in
death or serious injury.
WARNING
Indicates a medium or low potential hazard which, if not avoided,
could result in slight or moderate injury.
CAUTION
Indicates a potential risk which, if not avoided, could result in
property damage, data loss,
reductions in performance, or
unpredictable results.
TIPS
Provides methods to help you solve a problem or save time.
NOTE
Provides additional information as a supplement to the text.
Revision History
Version Revision Content Release Time
V1.2.4 Revised “Important Safeguards and Warnings”. December 2022
V1.2.3 Revised wiring description. November 2022
V1.2.2 Revised wire color description. January 2022
V1.2.1
Added the recommended installation
height of the device.
January 2022
V1.2.0 Added new model 4.3-inch VTH. October 2021
V1.1.0
Added description of the functions of 7-inch
VTH.
Added Factory Reset function.
March 2021
V1.0.0 First release. August 2020
Privacy Protection Notice
As the device user or data controller, you might collect the personal data of others such as their face,
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