Patent ID: 8866597

Claim:
Radio remote control system of a machine that comprises at least one machine drive for a moveable machine part, which machine drive can be controlled by the radio remote control system, comprising a radio receiver assigned to the machine, a hand-held unit ( 10 ) comprising a control unit, a transmitter and at least one motion sensor, wherein the control unit is configured to communicate control commands issued by a user to the transmitter, and to cause the transmitter to transmit the control commands to the receiver, and wherein movements of the hand-held unit ( 10 ) in space about at least one tilt axis or pitch axis (KA, DA) can be detected by the motion sensor in such a way that in a motion control mode, the detected movements can be converted by the control unit into control commands, which can be communicated to the machine by radio transmission between transmitter and receiver, wherein the motion control mode can be activated by a user input at the hand-held unit ( 10 ), characterised in that the receiver comprises a feedback transmitter and is configured, on receiving control commands, to activate the feedback transmitter to transmit feedback information, and wherein the hand-held unit comprises a feedback receiver that is configured to receive the feedback information and is connected to the control unit and comprises an acoustic and/or haptic indication device which is controlled by the control unit and which can be used to indicate operating function information from the radio remote control system according to the receipt of feedback signals from the feedback transmitter.