Testo 925 Thermometer -50 +1000 °C Sensor
If you like to do things yourself around the home, then maybe a thermometer could be useful. There's no cord to restrict you, just make sure you've charged the battery.
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From Amazon
testo 925 – Temperature measuring instrument for TC Type K with App connection
£118.80
AC One
testo 925 Temperature measuring instrument for TC Type K with App connection
£106.80
Conrad Electronic
testo 925 Thermometer -50 - +1000 °C Sensor type K
£128.23
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