PH-2023 Waterproof Digital Soil pH & Temperature Tester is a must-have tool for agriculture, gardening, and hydroponics. Accurately measures pH (0.0014.00) and temperature (050°C) with ±0.02 pH precision. Features automatic temperature compensation (ATC), a large LCD backlit display, and a replaceable high-sensitivity probe. Perfect for soil testing in farms, gardens, greenhouses, and scientific research