Features: Fully functional and handy for knowing when plants are watered, you can also test the pH in the soil if it's sunny, you can use the 3-in-1 moisture meter to adjust the pH to the right level. Easy to use, no batteries required, you can use it indoors or outdoors. Insert the probe about 2-4 inches into the soil, then toggle the switch to test what you want to measure. Small size, lightweight and portable, convenient for indoor and outdoor use, 3 in 1 soil moisture/pH/sunshine meter, ideal soil test kit for plant care, home and garden, lawn, farm. Better understand the condition of your plants, monitor soil moisture, help you control soil pH and see if plants are getting enough sunlight for healthier plant growth. Accuracy reading reference, humidity range: 1-10 (1-3 dry, 4-7 normal, 8-10 wet), relative light: 0-2000lux (0-200 low, 200-500 low+, 500-1000 normal, 1000- 2000 high), pH range: 3.5-8ph (3.5-6.5 acid, 7-8 base). how to use: Step 1: Switch the switch to Humidity/pH/Light position. Step 2: Insert the probe about 2-4 inches into the soil. Step 3: Adjust the position of the probe until the pointer on the dial swings slightly. Step 4: After 10 minutes, read the moisture/pH/light level in the dial. STEP 5: Remove probe from soil and wipe clean after each use. Specification: Material: plastic + alloy Size: 11.42*1.97in/29*5cm Color: as picture shown Package Includes: 1pc Notes: Please allow small errors due to manual measurements. Different monitors may display slightly different colors.