The light intensity analysed by the light sensor on the instrument also lets you know when to water, control pH and temperature acidity, and determine if your plants are enough light to grow them better and in a more scientific way. Fast and Accurate Measuring Tools --- Digital Soil pH Meter is made of advanced probe technology, which is more to than ordinary materials. With higher conductivity and sensitivity, it greatly improves the speed and accuracy of detecting and analysing soil moisture, EC and pH, giving you a timely and accurate picture of your plants' growing environment. Smart Soil Testing --- Insert the probe into the soil 3-4.7 inches, and after about 3 seconds, the probe display the soil's moisture value, light value, pH value, EC value, fertility value, salinity value, temperature value, and air humidity value at the same time. This help you grow plants and flowers better. Multi-Function 6-in-1 Plant Soil Moisture and PH Tester --- This tester is specially designed to test the PH, EC, fertility, soil moisture, temperature and light level of plant soil. It is a perfect soil pH test kit with high accuracy, fast response and easy to use ideal for garden, lawn, farm, indoor and outdoor use to help you take better care of your flowers and plants. Professional Multifunctional Soil Tester --- It is suitable for indoor and outdoor, home gardening, farms, vegetable gardening, pot gardening, flower gardening, greenhouse gardening, soil testing and so on., Weight: 0.76610636045 Pounds, Manufacturer: Jeenuuder