Lascar el wifi data logging sensors lascar el wifi th cal th the lascar el wifi th is a high accuracy wi fi temperature and humidity data logging sensor that measures the temperature and humidity of the environment in which it is situated this high accuracy version is accurate to plusmn02degc and plusmn18rh humidity the data is then streamed wirelessly over any wi fi network and can be viewed on a pc using free software package or on the el wifi cloud during configuration the