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 lampEasy to operate: detector consists of 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 part into the soil, one key Real-time monitoring of the current soil moisture content, a must for lazy peopleAutomatic monitoring: There are kinds of red, green and orange indicator . The red light flashes once six seconds, which means it is particularly dry and needs to be watered immediately; the orange light flashes once six seconds, which means the soil moisture is moderate, and watering is necessary; A green light means good soil moistureWide range of application: it can be inserted into any indoor and outdoor potted soil. It is recommended to insert a scale of about 8cm in the soil of succulents. It is recommended to insert a scale of about 4cm for plants with high humidity requirements. It is a must for the maintenance of potted plants.Long-term monitoring: The black detection part 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 Christmas gift for or colour: black + whiteMaterial: Plastic Contents:1 x Automatic Soil Moisture MeterOnly the above content, other are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.