Here we are pleased to introduce this functional Moisture & pH & Light 3 in 1 Meter to you. This 3-in-1 meter is useful; it can test your soil value, soil moisture level and sunlight level. This accurate 3-in-1 moisture meter gives instant results, allowing you to choose the proper soil amendments. The sensitivity of the moisture reading depends a lot on where you place the meter in the planter, the size/shape of the planter, and also the dirt/potting mix. It is a great 3-in-1 meter to keep houseplants, trees and crops healthy.