Product description pH Range: 3.5-8 Ph Moisture Range: 1-10 (1-3 DRY, 4-7 NOR, 8-10 WET) Probe length: 17.8cm Probe diameter: 5.1mm Color: Silver1pcs, light green2pcs Package Included: 1pcs or 2pcs 3 in1 Soil Tester 1.3-in-1 FUNCTION: The soil ph meter can test the pH value,the dry humidity of the soil and the sunshine intensity, a great tool for your gardening. 2.EASY TO USE: No batteries needed, just insert the sensor probe into the soil about 2-4 inches, toggle switch to test soil moisture, pH, sunlight you would like to measure. 3.ACCURATE AND RELIABLEPremium Double-needle Detection Technology strongly enhances the speed and accuracy of detecting and analyzing soil moisture and pH acidity, refuse to be a killer of plants, promote plant growth in a healthy way. 4.INDOOR & OUTDOOR PLANT PH SOIL TESTERDesign to be lightweight and portable, easy to carry around for outdoor use, ideal soil test tool kit for home plants, garden, lawn and farm indoor use. 5.IMPORTANT TIPs1.Designed for testing soil ONLY, Never use it to test liquid or touch the stone or hard rock soil, easy to damage the probes. 2.Please wipe clean the probe after use.