If pressing the touch button to open the lock the respective LED flashes repeatedly without controlling the lock, the "safe lock" mode is active on your Classe 100X so the keys are active only if an audio / video connection is in progress between videophone and video external panel.
To deactivate the "safe lock" mode:
- remove Classe 100X from the wall bracket
- remove the green power supply terminal
- move the microswitch "function safe lock" on the back of the video door entry unit to the right position
- re-insert the green power supply terminal
- reposition the video door phone on the wall bracket