Geemarc DECT250 Manuel D'utilisation page 10

Installation
The telephone has an automatic charging control to avoid excessive charging.
Before the handset can be used, the handset batteries must be charged for a
minimum of 15 hours on the base.
Note :
When batteries get low during a call , there will be a warning tone ( beep), you will
have to place the handset on the base to recharge
(*) Classified "hazardous voltage" according to EN60950 standard
(**) Classified TNV-3 according to EN60950 standard.
10