Specifications: Hardware: OEC-T5 Software: EL-50448. Certification: CE. Material: High quality plastic and metal. How to use EL-50448 TPMS Relearn Tool: Step 1. Enter learning mode. Set the shifter to thumb. Turn the ignition switch to ON. Enter the tire pressure interface displayed by DIC. The DIC shows Press Set / Ctrl thumbs to rearninch. Press Thumbs / Ctrlinch. The turn signal lights for 3 seconds and the horn beeps twice to enter learning mode. Step 2 - Read tire pressure sensor information start from left front wheel. Hold the EL-50448 antenna against the valve core, near the tire rim. Start EL-50448 Tire pressure tool by pressing the start button. It is successful in reading tire pressure sensor information when the horn beeps once. Step 3 - Same method to read other tire pressure information. Follow the instructions above to read the pressure of the right front, right rear and left rear tires. The turn signal lights up for 3 seconds and the horn beeps twice when learning is