A lighting apparatus includes a string of light emitting diode sets coupled in series, each set including at least one LED. Light of different wavelengths is emitted along different portions of the length, and an opaque slider allows the user to select the preferred wavelength of light for a particular task. The target receiver includes an RFID reader and a GPS receiver, which, upon the passing of a golf ball through the receiver, reads the golf ball ID using an RFID tag in the golf ball, then sends that data along with GPS data back to a server. The sales probability engine utilizes various sales information to determine the account control level corresponding to a particular stage of the sales cycle.