Do you have a question about the Dahua VTH5221DW-C and is the answer not in the manual?
Wiring diagrams and connection instructions for the device.
Procedure for network setup, Wi-Fi/wired connection, and confirming successful operation.
Configuration options for ringtones, DND, alarms, modes, and general parameters.
How to make calls, manage contacts, and view call history.
Instructions for arming/disarming the system and managing security passwords.