Dahua VTO2000A-K module a connected door lock can be unlocked with a pin code. The VTO2000A-K is connected with one network cable to the special Dahua PoE switch (VTNS1060A) for the data signal and power supply. The Dahua VTO2000A-K is connected to the VTO2000A-C and receives power from the switch via the VTO2000A-C