Automatic phase adjustment of a pulsed electronic article surveillance transmitter is provided. The signal generator circuit has an output adjustor circuit for outputting a first output signal and a second output signal in accordance with an input signal, and a level shifter for converting a voltage level in accordance with the input signal to generate a third output signal and a fourth output signal. The coating layer is composed of a anticorrosive material performing sacrificial anticorrosion such as inorganic material containing zinc and a film of the anticorrosive material is formed by spraying. The system has diversity of wavelengths through a multi- wavelength system operating predominately in the infrared spectrum.