Product s Technical parameters: pH range: 3-8 pH; Humidity range: 1-8%; pH accuracy: 0.2pH; Water accuracy: 1%. Ambient temperature: 5-50 C Note: When using the device, be careful not to touch the stone when inserting the electrode. Do not use too much force as this will damage the electrode. Do not put the instrument and magnetic material together. Do not store it in the floor for more than 1 hour. Wash the electrode after use. Package Including ? 1 x high-precision floor tester 1. ?Portable? high-precision garden soil pH meter moisture tester The pH of the soil is a very important factor for the quality of the crop. Most cultures cannot survive in soil that is too basic or too alkaline. Getting the right pH for your crop is extremely important. 2. ?Easy to use? Easy and accurate way to measure the pH and moisture content of different soil types. It measures the pH from 3 to 8, indicating acidity and alkalinity, while humidity is from 1 to 8 is measured. This indicates that the floor is dry or wet. 3. ?no battery required? This item meets strict quality and safety standards. Easy to use and suitable for indoor and outdoor testing. 4. ?Has many uses? Ideal for quick pH and moisture references in vineyards, vegetable products, orchards, agriculture, agricultural products, greenhouses, lawn care, garden planters, flower pots. 5. ?Promotion of healthy plants? It secures and maintains the health and quality of your green. When you use it, you can know when to water and to control the pH of your plants.