A control device for a conveying device, comprising:: - a control unit (MC1, MC2, MC3), which is designed to generate control signals for a conveying device, - a data interface, which is designed for a signal transmission of control signals to the control unit, - a first energy interface, which is designed to supply energy to the control unit, - a connection interface, which is designed to establish a signal control connection and an energy supply connection between the control unit and a conveying device arranged outside of the control device, further comprising a second energy interface, which is designed to supply energy to the control unit, wherein - the first energy interface is designed to receive an energy supply in the form of a voltage supply with a first voltage, - the second energy interface is designed to receive an energy supply in the form of a voltage supply with a second voltage or with a third voltage instead of the second voltage, whose level differs from the level of the second voltage, characterized in that the control unit is designed to alternatively conduct an energy supply voltage of 24 volts or an energy supply voltage of 48 volts to motorized conveyor rollers, so that motorized conveyor rollers, whose drive power is supplied with a drive voltage of 24 volts and motorized conveyor rollers whose drive power is provided with a drive voltage of 48 volts, can be connected to the control unit, and that the control unit is designed to relay the second or third voltage directly to the connection interface, so as to supply a conveying device connected thereto, wherein the conveying device is a motorized conveyor roller. - a control unit (MC1, MC2, MC3), which is designed to generate control signals for a conveying device, - a data interface, which is designed for a signal transmission of control signals to the control unit, - a first energy interface, which is designed to supply energy to the control unit, - a connection interface, which is designed to establish a signal control connection and an energy supply connection between the control unit and a conveying device arranged outside of the control device, further comprising a second energy interface, which is designed to supply energy to the control unit, wherein - the first energy interface is designed to receive an energy supply in the form of a voltage supply with a first voltage, - the second energy interface is designed to receive an energy supply in the form of a voltage supply with a second voltage or with a third voltage instead of the second voltage, whose level differs from the level of the second voltage, the control unit is designed to alternatively conduct an energy supply voltage of 24 volts or an energy supply voltage of 48 volts to motorized conveyor rollers, so that motorized conveyor rollers, whose drive power is supplied with a drive voltage of 24 volts and motorized conveyor rollers whose drive power is provided with a drive voltage of 48 volts, can be connected to the control unit, and that the control unit is designed to relay the second or third voltage directly to the connection interface, so as to supply a conveying device connected thereto, wherein the conveying device is a motorized conveyor roller.