switel BCC2020 Manuel D'utilisation page 8

Important Information
If traveling abroad, make sure that the voltage
shown on the mains power adapter corresponds
to the local mains power before connecting to
the power supply
To prevent electric shock, do not open the case
of the Baby Unit and Parent Unit (except battery
compartment covers)
Risk of explosion if batteries are replaced by an
incorrect type. For the Parent Unit, always use
rechargeable batteries.
2 x AAA rechargeable batteries into the battery