A connecting member in a radio control transmitter for transmitting a control signal to a control target by controlling an operating portion detachably attached to a main body is provided. The connecting member is disposed between the main body and the operating portion to randomly set a position of the operating portion with respect to the main body, wherein the connecting member has outer fitting holes arranged along a circumference of a large diameter and inner fitting holes arranged along a circumference of a small diameter to be concentric with arrangement of the outer fitting holes.

A system for communicating pitch selections wirelessly from a wireless transmitter has a coded signal generator that generates coded signals in accordance with selected pitch types. A receiver decodes the received coded signals, selects an audio file based on the received coded signal and generates an audio signal announcing the selected pitch type based on the transmitted selected pitch type in accordance with the received coded signal. The audio signal is transduced by a bone conductor transducer so that the player can hear the announced selected pitch type through bone conduction.

A remote key device includes a housing including a first waterproof compartment and two second waterproof compartments spaced from front and rear ends of the first waterproof compartment respectively; two floats disposed in the second waterproof compartments respectively; and a PCB disposed in the first waterproof compartment. There are further provided with a first space disposed between the first waterproof compartment and one of the second waterproof compartments, and a second space disposed between the first waterproof compartment and the other second waterproof compartment. There are further provided with a frame disposed on the first waterproof compartment and a sealing member disposed on the frame.

A remote key device includes a housing including a first waterproof compartment and two second waterproof compartments spaced from front and rear ends of the first waterproof compartment respectively; two floats disposed in the second waterproof compartments respectively; and a PCB disposed in the first waterproof compartment. There are further provided with a first space disposed between the first waterproof compartment and one of the second waterproof compartments, and a second space disposed between the first waterproof compartment and the other second waterproof compartment. There are further provided with a frame disposed on the first waterproof compartment and a sealing member disposed on the frame.

A system for cryptographic wireless detection and authentication of fluids includes a computing device configured to receive, from a transmitter attached to a container, a unique identifier associated with a fluid contained in the container, locate, at an immutable sequential listing, at least an identifier-specific record using the unique identifier, and a lot identifier associated with the unique identifier, retrieve, from the immutable sequential listing, at least a lot-specific record using the lot identifier, capture, from the container, at least a secondary datum describing the container, generate an authenticity probability score as a function of the at least an identifier-specific record, the at least a lot-specific record, and the at least a secondary datum, and display to a user an output based on the authenticity probability score.

A system for cryptographic wireless detection and authentication of fluids includes a computing device configured to receive, from a transmitter attached to a container, a unique identifier associated with a fluid contained in the container, locate, at an immutable sequential listing, at least an identifier-specific record using the unique identifier, and a lot identifier associated with the unique identifier, retrieve, from the immutable sequential listing, at least a lot-specific record using the lot identifier, capture, from the container, at least a secondary datum describing the container, generate an authenticity probability score as a function of the at least an identifier-specific record, the at least a lot-specific record, and the at least a secondary datum, and display to a user an output based on the authenticity probability score.

A radio antenna interface for a portable radio is provided comprising a radio housing having a control top with a circular walled control top opening for receiving an antenna, the circular walled control top opening having an interior surface with a protruding bumper feature formed thereon. An antenna having has a base portion for insertion into the circular walled control top opening, the base portion has a ring feature forming a full circumference bump around the base portion. Once the antenna is assembled with the portable radio, the ring feature is located beneath and abuts with the protruding bumper to form the radio antenna interface. The radio antenna interface provides increased friction to minimize loosening of the antenna under extreme usage conditions.

A connecting member in a radio control transmitter for transmitting a control signal to a control target by controlling an operating portion detachably attached to a main body is provided. The connecting member is disposed between the main body and the operating portion to randomly set a position of the operating portion with respect to the main body, wherein the connecting member has outer fitting holes arranged along a circumference of a large diameter and inner fitting holes arranged along a circumference of a small diameter to be concentric with arrangement of the outer fitting holes.

Provided is a transmitting device for a cart with an auto following function, which can sense the position and moving path of a user and move while following the user. The transmitting device for a cart provides a sensing and communication function such that the cart with the auto following function can sense and follow the position of the transmitting device. Thus, the cart can sense and follow the position of the transmitting device. Furthermore, since the transmitting device for a cart can be conveniently worn like a watch, a user's convenience can be improved.

Provided is a transmitting device for a cart with an auto following function, which can sense the position and moving path of a user and move while following the user. The transmitting device for a cart provides a sensing and communication function such that the cart with the auto following function can sense and follow the position of the transmitting device. Thus, the cart can sense and follow the position of the transmitting device. Furthermore, since the transmitting device for a cart can be conveniently worn like a watch, a user's convenience can be improved.