Häfele dialock DTSH Instructions De Montage page 64

If no red clearing key is presented to the control panel within 5 sec-
onds, the procedure will be automatically interrupted.
The red clearing key must be presented to the control panel again to
complete the initial start-up.
5. When the key has been trained successfully, the LED will be perma-
nently blue and an acoustic signal will be heard. The Dialock DTSH
door terminal then goes into normal operating mode.
If persistent errors occur:

Notify the service location.
64 Dialock Door Terminals DTSH, DTSH FH - Status: 07.2008 - 732.29.134
Installation Instructions