Wireless Temperature sensor. Is it worth it

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I have a largish room. With two radiators. It seems I can only use one radiator to measure temp with wireless temp. Sensor. It reads 20C heating to 22. A digital thermometer placed besides it reads 18C . Im using the SRV as control and offset is -1.7C . When i use the wireless temperature sensor the offset need to be plus 2.3. It seems to me that this sensor is a waste of money, ir am I being dumb . Can someone help. Videos and tado help doesn‘t seem to help at all

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  • wateroakley
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    Only one sensor in the room is used as the measurement device. TRV measured temperatures can vary, especially with large room rads.. Your wireless room stat offset result is very odd.

    After faffing around with TRV measured temperature offsets for our lounge, we added a wireless room stat. SWMBO is now very happy.