The single worst company I've dealt ever with. Before you just chalk it up to me being upset that I got a dui... I know I made a BIG mistake and I require it to drive (1 year and im almost done) and I will never do it again, but this company is terrible. There is NO customer support. Also, I am on my 4th replacement device!!! It is on me every time a device stops working. The place I take it to said that they can't even count the number of INTOXICILOCK devices that they have had to order for replacements. They told me that they now keep an entire box just so they can keep people driving! Do not use this company. Consider this a fair warning. Use INTERLOCK instead or anything other than INTOXICILOCK. All they are are salesman with BAD customer support.