Dahua Technology DHI-VTO4202F-P-S2 2MP IP Outdoor Video Intercom - Manual (Page 21)

10
Making Cascade Connections
The cascade connections are required for all modules. The Outdoor Video Intercom Panel
(the left-most panel above) is the only required module and is the starting point for the
cascade connections.
Note:
• The VTO connection must be made to an Input port.
• Connect “Out” ports only to "In" ports.