Color: Green Product size:60*40*260mm The length of the probe:170mm The weight?100g pH Range: 3.5-8 pH (3.5-6.5 Acid, 7-8 Alkaline) 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) Method of use: Use fine sandpaper to lightly sand the probes and keep it clean and dry and then use. Switch to moisture/pH/light position according to demand. Insert the probe into the soil about 3-4 inches. Adjust the position of the probe until the pointer on the dial swing slightly. Check moisture/pH/light level in the dial after 10 minutes. Matters needed attention: Do not force it into very hard soil or touch hard objects since the probe would be easily damaged. Do not use it to test pure water or other liquids. It can only be used to measure soil. Don't leave it in the soil for too long time?or it may damage the probe. Please wipe and clean the probe after each time use. If the soil is too dry, the indicator will not move, water it before testing. Package Include: 1 x Soil Moisture/Light/pH Tester