Cos-03 wireless temperature sensor usb temperature humidity datalogger

Precautions： 1. The probe should ensure full contact with the soil and compact it to ensure data accuracy. 2. The soil speed tester only tests soil and soil, and is not suitable for dry flour, small stones, organic wood chips, liquid particles, etc. 3. In order to improve the accuracy of the test results, please use the method of multi-point test to average. 4. When using, pay attention to the test point not to touch the stone, and do not use excessive force, otherwise it will easily damage the electrode. It should not be inserted in the soil for a long time, it is easy to oxidize. 5. After the measurement, clean the soil particles on the surface of the probe with gauze in time to keep the probe dry.