Features: ▶ 3-in-1tests moisture, PH value and light level using two 20cm probe and a light sensor ▶ High accuracy and Rapid respondthere are three calibration tables, you can respectively get the accurate value immediately. ▶ No Battery NeededEnvironmentally friendly because it needn\'t any battery or electricity. Just plug in the probe to your object. ▶ Compact and portableit is convenient to use it indoor, outdoor or in your greenhouse. ▶ Promote Healthy plantsit ensures and maintains the health and quality of your greenery. By using it, you can know when to water, control PH level and whether the plant getting adequate sunlight. Package Included:1 x14PCS Succulent Plant Potting Tool Set 3 In 1 Soil Detector. Please Note: 1. Please allow 1-3cm error due tomanual measurement. 2. Please understand that colors mayexist chromatic aberration. Thanks for understanding!