This 4 in 1 soil moisture, pH, temperature and light tester offers 4 important measurements: pH Value, Temperature, Moisture, and Environment Sunlight Intensity. The sensitive 200mm probe and light sensor window provides 5 units of accurate & precise measured results, pH, moisture, sunlight, °C & °F (soil & environment). In addition to the features, it also have an oversized LCD with clear display, backlight and auto power off. This instrument is a great tool for measuring growing conditions of all kinds of indoor and outdoor plants as well as garden evanescence. A very useful one in lawn care to determine soil conditions in different areas of the garden and finding correct grass seed.