3. Maintenance
If used frequently, the device surface, the keypad in particular, gets dirty. Use a piece
of soft cloth moistened with clean water to clean the device.
Warning
Do not use aggressive detergents (such as abrasives or strong
disinfectants).
Warning
Prevent water from getting inside the intercom.
Tip
Clean the device in dry weather so that waste water can evaporate
quickly.
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