CAME BPT TH/550 Manuel D'installation Et D'utilisation page 54

Note. In all models of the device, temporary power failures caused by a mains power outage or after
replacing the battery do NOT delete any programming.
Cleaning the screen
With the device in stand-by mode, press
and hold the
A beep and flashing
that the screen is sensitive to touch for
30 seconds.
Note: Only use a soft, dry or slightly damp
A
cloth to clean the terminal. Do not use any
chemical products.
button for 5 seconds A.
icon indicate