Digital 4 Way Soil and Light Tester for Plants and Lawn - pH, moisture, temperature and light level 4 in 1 Soil Tester for plants and lawns Measures sunlight (9 levels), soil moisture (5 levels), soil pH (12 levels) and temperature 8 inch long probe 9V battery included, auto shut off after 5 min Great tool to help fix your lawn when grass does not want to grow in certain areas of your yard.