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 host display lamp Easy to operate: Our 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 part into the soil, one key Real-time monitoring of the current soil moisture content, a must for lazy people Automatic monitoring: There are three kinds of red, green and orange indicator lights. The red light flashes once every six seconds, which means it is particularly dry and needs to be watered immediately; the orange light flashes once every six seconds, which means that the soil moisture is moderate, and watering is necessary; A green light means good soil moisture Wide 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 our detector can be directly inserted into the water (white host is forbidden to soak in water) or can be inserted in the soil for a long-term monitoring of the soil moisture of the potted plant; perfect for friends or family colour: black + white Material: Plastic Package Contents: 1 x Automatic Soil Moisture Meter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.