Housing lid for a field device of automation technology for wireless transmission of information

A housing lid for a field device, comprising:

• a screw thread embodied and arranged on the housing lid such that the housing lid is securable to the field device by the screw thread and a complementary screw thread of the field device;
• a receiving and transmitting unit embodied to receive wirelessly information produced by an external unit and to transmit wirelessly information produced by the field device to the external unit;
• a battery unit embodied to supply the receiving and transmitting unit the field device with electrical energy;
• and
• a communication interface in electrical contact with the battery unit and the receiving and transmitting unit, and embodied to connect with a corresponding communication interface of the field device,
• wherein the battery unit and the receiving and transmitting unit are attached to or supported by the housing lid when the housing lid is not in threaded engagement with the field device,
• wherein the communication interface of the housing lid is further embodied to exchange information between the receiving and transmitting unit and the field device via the communication interface and the corresponding communication interface of the field device and to transfer electrical energy between the communication interface of the housing lid and the corresponding communication interface of the field device;
• wherein electrical contacting of the communication interface of the housing lid and the communication interface of the field device is formed during a threading engagement of the housing lid and the field device.