Abstract: The invention is a device included with a golf club that plays an audible, musical sound file during performance of a golf swing for the benefit of learning a repeatable, rhythmic motion. A sensor detects the first movement of a golf swing and automatically begins the playing of a sound file selected from a library of files stored on the device. The sound files contain musical notes and the recorded sound of a golf club striking a golf ball. The timing of the notes and recorded sounds contained in the sound file has been synchronized to the study of the timing and rhythm of proficient golfers. The sound emits from the head of the golf shaft, distal to the grip end, for the benefit of listening to where the club is located with respect to the timing of the melody played.

Abstract: The present invention is directed to a method and apparatus for testing the operation of a sensor controlled monitor device by using a test device connected in parallel to the monitor device. When activated, the test device sinks a current signal, representing a parameter to be monitored, in a steadily changing, calibrated manner, causing an input to the monitor device to vary, thus permitting the monitor device to respond to the varied signal to calibrate or test alarm settings and function. The present invention permits easy confirmation of the monitor device's gain adjustment, zero adjustment, and setpoint adjustment. In addition, there is no need to physically disconnect the transmitting sensor circuit or to physically change the amount of the substance being monitored. There is also no need to disturb any wiring of existing circuits.