Description: Functions: You can know plant when to water, and if it has sufficient sunlight, also you can test the ph level in the soil that you can adjustment the ph to a appropriate level by using this 3 in 1 moisture meter. Easy to Use: This 3-in-1 moisture meter with light & ph test function don’t need batteries, and you can use it indoor or outdoor. Insert probe into soil around 2-4 inches, then toggle switch to tester what you want to measure. Accuracy Reading: Moisture Range: 1-10 (1-3 Dry, 4-7 Nor, 8-10 Wet), Relative Light: 0-2000lux (0-200 Low, 200-500 Low+, 500-1000 Nor, 1000-2000 High), pH Range: 3.5-8ph (3.5-6.5 Acid, 7-8 Alkaline). Indoor/Outdoor Design: It’s lightweight and Portable design, convenient for indoor and outdoor use. Wide Use: This 3-in-1 soil moisture meter is the ideal soil test kits for plant care, home and garden, lawn, farm Specification: Moisture Range: 1-10 (1-3 Dry, 4-7 Nor, 8-10 Wet). Relative Light: 0-2000 lux (0-200 Low, 200-500 Low+, 500-1000 Nor, 1000-2000 Hgh). pH Range: 3.5-8 pH (3.5-6.5 Acid, 7-8 Alkaline). Color: Green