Easy to operate: detector consists of three parts: the light prompt, the switch button and the soil depth scale. You only need to install a AAA battery (not included), and then insert the black into the soil, one key Real-time monitoring of the current soil moisture content, a must for lazy people Soil Moisture Detector: The black long strip area helps to quickly detect the moisture in the soil. You can accurately know whether the plants should be watered by the color of the white display lamp Long-term monitoring: The black detection of detector can be directly inserted into the water (white is forbidden to in water) or can be inserted in the soil for a long-term monitoring of the soil moisture of the potted ; perfect for or, Manufacturer: Puttussy