I got this thermometer as a replacement for a previous one of the same type as it was fairly cheap. Neither thermometer was terribly accurate - I have been able to compare them both with another of a diffent manufacture and also with a local Met Office station. Overall there was a systematic error of minus one degree centigrade plus a random error difficult to quantify. You can easily see the difference when the internal and external readings are compared with the remote sensor indoors. The previous thermometer transmitter failed after a year and a half. The current one fails intermittently despite replacing batteries. Apart from these problems, the clock is linked to a German radio transmitter and so always reads one hour ahead of UK time (!) and the days are in German. But these are both minor problems as long as you are aware of them. Overall I'd give this product two and a half stars - it does give some idea of how cold or hot it is outside but I'd like something better if the price was right.Addendum: This thermometer packed up completely after a year and I have now found a much better and cheaper thermometer by Weathereye. The reliability and precision of the new thermometer really shows up how extremely poor the previous one was.

I got this thermometer as a replacement for a previous one of the same type as it was fairly cheap. Neither thermometer was terribly accurate - I have been able to compare them both with another of a diffent manufacture and also with a local Met Office station. Overall there was a systematic error of minus one degree centigrade plus a random error difficult to quantify. You can easily see the difference when the internal and external readings are compared with the remote sensor indoors. The previous thermometer transmitter failed after a year and a half. The current one fails intermittently despite replacing batteries.
Apart from these problems, the clock is linked to a German radio transmitter and so always reads one hour ahead of UK time (!) and the days are in German. But these are both minor problems as long as you are aware of them.
Overall I'd give this product two and a half stars - it does give some idea of how cold or hot it is outside but I'd like something better if the price was right.
Addendum: This thermometer packed up completely after a year and I have now found a much better and cheaper thermometer by Weathereye. The reliability and precision of the new thermometer really shows up how extremely poor the previous one was.