Electrical stimulation units are devices that deliver electrical impulses to the body, often used for therapeutic purposes. They can help relieve pain, improve muscle function, and promote healing by stimulating nerves and muscles. These units are commonly used in physical therapy and rehabilitation settings. There are various types of electrical stimulation units, including TENS (Transcutaneous Electrical Nerve Stimulation) and EMS (Electrical Muscle Stimulation). Each type serves different functions, such as pain relief or muscle strengthening. Patients typically use these devices under the guidance of healthcare professionals to ensure safe and effective treatment.