This 3-in-1 moisture, pH and light meter with easy to read scale could save you a lot of money and stress. Using this scientifically accurate measuring water moisture testing device you can be sure your soil moisture and pH is maintained at the right levels. You can also monitor that your plants are getting enough light. Technical Details : 3 in 1 mutifunctional moisture, PH and light meter. Sensor Suitable for all types of soil farming solution for agriculture . Simply insert probe of the meter into the soil, switch to the setting you want to measure and read the scale. No battery required, simple and convenient to use. Helps you ensure correct balance. Ideal garden tools for both indoor and garden plants care. 100% brand new and high quality sensor. Please remember to clean the electrode after each use before storing. 3-in-1 Function: You can know when to watering by measuring moisture content of soil. The 3-in-1 soil pH testers also can test the sunlight ,let you know if plant get enough light, it is good for its health. The most important is that the moisture pH meter can help you control PH level in soil, acidic or alkaline until it suitable for your plants. Accurate Reading: pH Range: 3.5-8ph (3.5-6.5 Acid, 7-8 Alkaline), 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).After a while, you will get a accurate data.