GT-DM Factory Reset

Summary

Steps on factory resetting a GT-DM or GT-DMA Entrance Station.

Solution

1. Turn on all switches (1-4) of SW1 and switches 2, 3, and 4 of SW2.
2. Turn on the power while pressing down the up and down arrow buttons.
3. Release the up arrow button after a beep is emitted and “Blue back” is displayed.
4. Release the down arrow button.
5. Press the X and Bell buttons.
6. “DELETE” is displayed during the initialization.
7. “Voice sentence” will be heard and the display turned off when it is done.