Chapter 1 System Structure
VTO and VTH are connected as a tree. VTO has a 12V DC adaptor supplying it with
power while switch has a 24V DC adaptor supplying it with power.VTO and VTH are
connected via switch. The switch supplies VTH with power via network cable. Electric lock,
magnetic feedback, door sensor and unlock button all can be connected to VTO, but the
VTO does not supply them with power. An example for system framework. See Figure 1-
Figure 1- 1