Humidity:1-10 (DRY-WET) Lighting:0-2000 (DARK-light) pH:8-3 (alkaline-acidic) Working temperature:-10-60℃ Note: 1. The soil tester is specifically designed for soil, please do not use it to test water or other liquids. 2. Rocks or other excessively hard soil may damage the probe, so please do not use too much force 3. Our detector is not suitable for particles, sand, and other loose soils. 4. After use, please take out the hygrometer and wipe the probe. Do not leave it in the soil for a long time 5. Most plants have soil pH values close to neutral, so the range of pH probes for testing is very small Colour:White Material:Plastic+Metal Package Contents: 1 * Soil Moisture Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. PH function, the acid-base balanced reaction of the soil directly affects the growth of plants, which can make you know the acid-base balanced state whenever and wherever you want. Adopts a highly sensitive extended probe for faster and more accurate detection. Suitable for different soil textures and dough, and suitable for various environments. 4in1 multi-functional design, there are 4 measurement modes to switch, you can switch between LIGHT, MOIST, NUTRIENT, and PH easily.With humidity function, soil moisture determines the living environment of plants, so it is easier to build a standard greenhouse with this product. Wide applications, it is suitable for indoor potted plants, green plants, greenhouse, vineyards, orchards, field production, nurseries, lawns, gardens, flower beds, farmland, and classroom experiments. Made of wear High-quality materials, with high accuracy, support the detection of the light, PH value, moist and nutrient in the soil of green plants, lawns, etc.