The handheld unit powers on properly and the display and navigation buttons respond. OTC TPR3834 TPMS Tire Pressure Monitoring System activation/reset tool kit. Includes. OTC TPR handheld TPMS tool. DB25 wireless Bluetooth adapter. Instruction manual. Molded carrying case This professional automotive tool is designed to activate and read compatible TPMS tire-pressure sensors. The included DB25 Bluetooth adapter allows wireless communication. Includes. OTC TPR handheld TPMS tool. DB25 wireless Bluetooth adapter. Instruction manual. Molded carrying case.