Ubibot WS1 looks cheap (plasticky) and is not accurate
The case and battery holder look like they belong on a $2 toy.
The WS1 appears to work, providing the same value °C as another $5 digital thermometer I have in the same location.
However the external DS18B20 USB sensor is not calibrated and gives a 1.8°c - 2.3°c low reading in the same location.
What is the sense in Unibot quoting temperature accuracy specs of +/- 0.1°C when the temperature reading itself is woefully inaccurate?