OTC Tools 3838 TPMS Tool Both a sensor activation and diagnostic device which couples On-Board Diagnostic (OBD) II relearn capabilities all in one compact and portable housing Features an exclusive wireless OBD II module for TPMS sensor registration 3.5 inch high resolution icon based screen for easy navigation of key menus including sensor activation, relearn procedures, universal sensor programming and Key Fob Signal Strength test Other standard features include USB & SD card connectivity and Infrared (IR) printing Tire Pressure Monitoring System (TPMS) devices ensure tires and vehicles are operated safely under the recommended factory conditions