I love this sensor and have bought three of them and have given two away to my church. Sorry to say they are not engineers and may not, as of yet, realize their value. These sensors are bluetooth, but can store 20 days of data when in range, can be downloaded very easily to e-mail and printed out ( temp, RH
HI, DP)) after you set the interval from the APP. Flu season is just around the corner and you know ( I hope you do) that getting it right can save lives. You can bet it all that if they don't, they want see my smiling face at church!!!