Described is a device which includes a housing, a chimney and a heat dissipation element. The locking levers are mounted on the rotor, and an annular groove is provided on the shaft, said annular groove engaging with the locking levers in the locking position, wherein the locking levers are prestressed in the unlocking position. A plurality of planet gears encircle the sun gear and operably connect with the sun gear. LED chip disposed in the recess. The message receive module is for receiving a request to access the mailbox via the external network.