Purchase this with my first August lock and with the newer version a year later. It worked flawlessly up until about 6 months ago and then started to disconnect and reconnect mysteriously. This pattern has gotten worse and the unit spontaneously disconnects at least twice per day sometimes for hours on end. Multiple contacts with the company have been useless. I spoke directly with customer support person who apparently thought two disconnects per day was normal operations! Company has asked for videos of the unit being set up which only confirms that it install correctly and works. They get a report each time is disconnects. I used to highly recommend the product and the company, but not any more.