Simple & Portable - Cookmaster Soil moisture meter only for testing soil moisture. Helpful to know moisture level to avoid over/ under watering, keeping your plants happy and healthy. Indoor & Outdoor Use - Ideal soil test tool kit for your garden, Yard, lawm, farm and house plants. No Batteries Required - Simply stick the sensor probe into the soil area you want to check and it reads your water level instantly. Easy to Use - 7.7 inch long probe sensor allows to see the moisture deep in the plant. Easy and accurately to read moisture , promotes healthy plants. Notices - Our Soil Moisture Sensor Meter is designed only for soil testing, do not put it into water for testing. Keep it away from rocks and extremely hard soil to avoid damaging it.