iTable of ContentsTable of Contents .....................................................................................................................i1 Product Overview ....................................................................................................... 11.1 List of Models ................................................................................................................. 11.2 Structure ........................................................................................................................ 11.2.1 Dimension ........................................................................................................... 11.2.2 Front Panel ......................................................................................................... 21.2.3 Rear Panel ........................................................................................................... 31.3 System Networking ........................................................................................................ 31.3.1 One-to-One Scene .............................................................................................. 41.3.2 Group Call Scene................................................................................................. 42 Install VTO .................................................................................................................. 52.1 Direct Installation ........................................................................................................... 52.1.1 Screw .................................................................................................................. 52.1.2 Dimension ........................................................................................................... 62.1.3 Installation Step .................................................................................................. 62.2 Embedded in Wall .......................................................................................................... 82.2.1 Screw .................................................................................................................. 82.2.2 Dimension ........................................................................................................... 82.2.3 Installation Step .................................................................................................. 92.3 Wiring ........................................................................................................................... 112.4 Electric Control Lock and Electromagnetic Lock .......................................................... 112.4.1 Electric Control Lock ......................................................................................... 112.4.2 Electromagnetic Lock........................................................................................ 123 Installation Debugging ............................................................................................. 133.1 WEB Setup.................................................................................................................... 13