Just bought another indoor/outdoor thingie in the Lidl sale as my previous purchase kept losing the connection with the outdoor sender.
I now have four tempreature sensors lined up in the shade on the dining room table and they all give diffferent results.
My 'control' is a digital radio controlled clock made by TCM which seemed to match the aircon maintenance handheld thermometer most of the time when I had it at work so is possibly fairly accurate.
I will give them longer to stabilise - I note that on my latest purchase the outdoor temperature semsor updates more quickly than the indoor one.
However in this wonderfully technological day and age it shouldn't be too difficult to produce an accurate digital thermometer, surely?
Will also see how closely the humidity readings agree.
Cheers
Dave R