Thermoskin Nerve Stimulator (TENS) Device Thermoskin Wireless Nerve Stimulator (TENS) Device: Supporting your Li Thermoskin Wireless Nerve Stimulator TENS Device Club Warehouse Managing Back Pain Thermoskin Manufacturing Warranty Thermoskin Wireless TENS Machine for Pain Relief, Muscle Stimulator,Mini Cervical. The Thermoskin TENS represents an innovative advancement in wireless electrical nerve stimulation devices. It enhances the technology found in conventional TENS machines, offering a more portable, efficient, and user friendly design. Wireless and portable design Integrated design, functional operation, simple and easy to use. Rechargeable lithium design, with built in power protection circuit. 16 level strength can be adjusted, according to personal preferences. Secure electrode patch detection and protection. The TENS machine operates in 15 minute cycles with an automatic shut off and can be restarted as needed.