My original order was a 2835 model lock. It was not quite what I was looking for so I arranged to have it returned and then purchased the 1150 series. The 1150 model is of excellent quality and value for the money. More importantly, the staff at the Keyless Lock Store provided me with outstanding product support during the return and purchase process. I am very pleased with my new lock and can't say enough about the excellent service provide to me by the staff. Thank you. Steve.