This text is designed to give the practitioner an accurate understanding of the history and development of electric devices and their usage with the goal of providing patients the safest, most effective treatment possible. It points out the physiological and therapeutic differences between alternating and direct current electro-acupuncture so the practitioner can decide which approach is preferable. A discussion of ryodoraku and ryodoraku diagnosis is followed by a description of the ES-160 device, electrical stimulation for anesthesia and pain control, replenishing and decreasing qi points, treatment point suggestions, and safety precautions. The sections on practical usage and safety include the essential knowledge for beginning practice.