Based on the theory of traditional Chinese medicine meridians and modern electronic technology, TENS uses pulse waveforms to stimulate human acupoints to achieve the purpose of treatment and health care. Regulate the body's immunity, endocrine, and nervous system, dredge the meridians and improve microcirculation. Treatment and relief of symptoms of frozen shoulder, cervical spondylosis, and rheumatoid arthritis. TENS acts on the meridians and acupoints of various parts of the human body for physical therapy to improve clinical effects. It has an automatic variable frequency pulse voltage, which can penetrate deep tissues for treatment of shallow and deep lesions. Enhance local blood circulation and metabolism, improve immunity, and regulate endocrine; it can repair and treat tissues around the lesion.