I received my ET-735 this afternoon from Amazon. Prime = free two day shipping. I am already ready to return it. Installed app on Samsung S5 no problems. Connected through bluetooth no problem when sitting in front of my MES 40. app made it easy to set temps. But NOTE - you can only set the temps on the app, not on the device. The device only has three buttons. ON/OFF C/F and BlueTooth on or off. There is no button to rotate through the probes. Set it up on the app. No problem. Nice pictures etc. Went to sit in front of the TV, Line of sight less than 20 feet away. No connection. Tried several times to reset, both the unit and the app, no luck unless I am right in front of the device. Now, while in front of my MES and the device, it connects, but says no probes are plugged in. I double check, the two probes are plugged in (first time they did register). Nothing but headaches. Maybe the bluetooth is not worth it. I want my buttons back to control it at the smoker and the phone. (I can do this with the MES 40 2nd Gen and its remote). I want to cry, I wanted so much to prove my MES's probes and it's heat controller/thermometer were not accurate. Any suggestions any one?