PH soil tester: Soil Tester Kit, 3 in 1 soil tester allows you, with scientific methods, to measure the light, humidity and pH of the soil. Our soil test kit helps you make your plants healthier. ( Cannot be used to measure water pH ) Easy to use: No battery needed, just insert the probe into the measured terrain (with a depth of at least 10cm) to get accurate and precise data. The soil tester pointer will not rotate if your plants are very dry. So your plants need watering now Super durable: PH uses a metal probe which is more durable than the glass probe (please note that the metal probe should be cleaned after use to keep the probe dry and clean). Suitable for indoor and outdoor : This 3 in 1 soil tester is a great tool for managing your garden, flowers, plants, vegetables, shrubs, etc. Scientifically Accurate: Very easy and accurate to read humidity, pH and light levels. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store