Please Kindly Noted:
1. DO NOT force the soil meter into very hard soil or touch hard objects, easy to damage the probes
2. DO NOT use it to test any liquids directly, such as pure water, lemon juice, vinegar and so on, or the probes may be damaged. This soil meter CAN ONLY be used in the soil
3. DO NOT leave the soil meter in the soil for a long time
4. CAN NOT determine the light necessary, it only shows the light intensity that is hitting it
5. If the soil is too dry and the indicator will not move, water it before testing