112.3 WiringSee Figure 2- 8.Figure 2- 8No. ComponentNameNote1 User Port Power supply, connect to lock, door sensor andunlock button.2 Project Port Reserved for project staff use.2.4 Electric Control Lock and Electromagnetic Lock2.4.1 Electric Control LockWhen VTO connects to electric control lock, it means that the positive end of electroniccontrol lock connects to NO of VTO (user port 10) while its negative end connects to COMof VTO (user port 12).When VTO connects to unlock button, one end of unlock button connects to UNLOCKBUTTON of VTO (user port 7) while the other end connects to GND of VTO (user port 9).See Figure 2- 9.