KT-300 should be Hard Reseted prior to communicate with any EntraPass software

Procedure to perform a Hard Reset:
1. Disconnect both transformer and battery.
2. Remove all connection to DOOR1 and RL1 terminals.
3. Place a jumper between the DOOR1 and RL1 terminals.
4. Apply AC power to the transformer.

The VITAL LED should flash 4 times. This means that the controller is in the Hard Reset mode.

5. Remove jumper.
6. Reconnect the battery.