Reliable and Accurate: Sensing probe ensures accurate and instant testing results based on conductivity difference, no battery need. Large and clear dial, easy to read. Avoid using it in excessively hard or loose soil, keep the probe clean and dry. 3 in 1 Soil Moisture Meter+ Soil pH Meter+Sunlight Meter: This meter can test soil moisture, light and pH value by switch modes with one button; It makes gardening and planting more efficient. Testing Range Refer: Moisture Range: 1-10 (1-3 Dry, 4-7 Normal, 8-10 Wet). PH Range: 3.5-8 PH(3.5-6.5 Acidic, 7 Normal, 7-8 Alkaline). Light Range: 0-2000 lux (0-200 Low, 200-500 Low+, 500-1000 Normal, 1000-2000 High). Universal Use: Lightweight and portable, easy to carry around for indoor & outdoor use, ideal soil test tool kit for home plants, garden, lawn and farm, but do not use it to test any liquids. Promote Plant Growth Healthy: The 3 in 1 soil meter help you adjust your plant soil's moisture, pH, and light levels according to the test result