TRS-Ⅱ Digital Soil water and temperature tester can be used in field test and observe soil water positioning, thus can get the soil moisture, hydraulic conductivity and other soil water properties parameters etc. This instrument use the principle of tensionmeter, the method of combining one or more probes,improve the traditional technology. You can also purchase a set of instrument, multiple probes. You can place the probes underground in different depth and different tested plots for long term. If you want to know the water of a point soil, you can connect the instrument with probes, then can read the value at once.