1. 3 in 1 Soil Tester: This instrument can test soil moisture, light and pH; one key to switch modes; it makes gardening and planting more efficient2. Small size: 10.8 inches in length, easy to carry around; convenient for indoor and outdoor gardeningTest range: moisture range 1-10 (dry to wet), light intensity 0-2000 (low light to strong light), PH value 3.5-8 (acid to 8 alkaline)3. Easy to use: durable and easy to use, plug and read, no battery required; designed for testing soil only; do not use for testing pure water or other liquids4. Supports the gardener: Lets you know the specific values of your soil so you know when to water, control pH and determine if plants are enough lightHow to use:Step 1: Switch Humidity/pH/Light Positions: Insert the probe of the meter about 2-4 inches into the root of the plantStep 3: Adjust the position of the probe until the pointer on the dial swings slightlyStep 4: After 10 minutes, note the moisture/pH/light level in the dialStep 5: Remove probe from soil and wipe clean after each useColor: GreenMaterial: plasticPackage Contents:2 x soil testersOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.