I bought an Autel MaxiTPMS PAD handheld accessory to program OE TPMS sensors and 4 sensors from this company. The software is easy to download but almost impossible to get working. To be honest I have had this product for about 2 weeks now and it has never worked. I have taken Autel reprogrammable sensors to 5 different tire shops here in the Dallas/Fort Worth area and none of them have been able to get their sensors to work. 2 out of 4 tire pressure sensors I bought and received less than 2 weeks ago show a low battery on the Autel system at one of the tire shops who can't get their own Autel reprogrammable sensors to work! Don't use this company unless you want to throw your time and money down the toilet. And even if you spend your money on toilet paper, it's more productive than giving it to Autel for this product.