The LED will flash yellow rapidly. You are now in admin mode. All commands below assume you are in this state.
A:
If you lose the master code, you can typically reset the system using an internal jumper. Power off the device. V2000-c Rfid Access Control User Manual
Power on the unit while continuing to hold the button/jumper for 3 to 5 seconds. The LED will flash yellow rapidly
The V2000-C is a "Standalone" unit, meaning it does not require a constant network connection to work, but it can connect for management. V2000-c Rfid Access Control User Manual
The manual typically outlines three levels of user privilege:
The master code is now safely reset back to the default 999999 .