Reliable and accurate: Sensing probe ensures accurate and instant testing results, matching for both indoor or outdoor use. Simple To Use: 1. Simply insert the sensor probe into soil 3-5 inches and you'll get the test result instantly. 2. Check the dial moisture level using the 10 scales. 3. Remove the probe from the soil and wipe clean. No batteries or electricity required. Easy to read large 10 scale color-coded dial (with red, green and blue markings) for accurate and instant soil moisture measuring. Single probe design ensures minimal disruption to sensitive roots allowing you to take readings without digging up too much soil. 100% SATISFACTION GUARANTEED: We stand behind our products with a 30 day money back guarantee and 1 year free replacement warranty. Your satisfaction is our priority!