A weighing device (101) has a weighing unit (102), a control unit and at least one application unit (110). The application unit is positioned within a secondary unit (104) that also has a receiving unit. The control unit has a unit for transmitting data. The weighing unit comprises load receivers (106) and a power transmitting unit. The secondary unit is placed on the load receivers, leaving a gap between the top side of the weighing unit and the bottom side of the secondary unit. The weighing unit transmits a power signal from the power transmitting unit to the receiving unit of the secondary unit through the gap and a control signal is transmitted from the data transmitting unit to the receiving unit of the secondary unit through the gap. The secondary unit, and in turn the application unit, is powered and controlled in a contactless manner.