The user manual for Vingcard 2100 can be useful in encoding a key card system. The user manual is usually provided by the manufacturer of the key card.
The lock needs to be re programmed.
change batteries and reprogram lock
Three blinking yellow lights mean the deadlock is locked from inside. Guest is in the room
for some reason our password would not work any more. Is there a reset password mode or how can we get the managers password to work?