Purchased MyQ and one Door Sensor bundle from Amazon wanting a second door sensor however they were back ordered. After a month of waiting discovered that I could get the sensor directly from Chamberlain Order # 2063938. It arrived early February and I attempted to install. I am techy and the original went in without one single issue, so I expected no issues. Followed the instructions for the second sensor install. When pushing the test button the MyQ does nothing. Contacted Tech Support. After a significant time on the phone tech support had me push some buttons on the MyQ which wiped the settings to the support person surprise. Not a big deal as I got the original reconnected in moments as that setup is working flawlessly. Tech support reported they knew they had an issue but thought that it had been resolved. Took my information and said that I would be contacted. Two months later nothing. I purchased this product for two reasons. One I wanted to program the door to open automatically at a certain time on certain days. And wanted to monitor both doors. Despite the advertising indicating I could program the doors to open once I got the product I discovered it would only allow you to remotely close. Disappointed but not a deal breaker. When I could not get the second door to open I was open to keeping the product as I have not seen anything else on the market as simple or for the price. But now that I can't even get support to follow up I am losing faith in Chamberlain quickly.