Intelligent WN1803 Soil Moisture Sensor Monitors Waterproof Indicator Light Soil Hygrometer Plant Flower Moist Testing Instrumen Features: 1. Waterproof:The soil hygrometer owns whole body anti-splashing function, convenient for watering plant. The black part of the soil hygrometer can be sunk in water totally for long time(the white handle part is forbidden to sink it in water). 2. Easy to operate:The soil hygrometer is easy to operate. One button to show you the soil moisture condition by the indicator light. Red color means lack of water, green means moderate moisture content, blue means plentiful water. When the water in soil is little, the soil hygrometer will flash red light each 5 minutes, reminding you to water. 3. Compact:The soil hygrometer is compact and lightweight, convenient to carry out. The compact size and simple shape design will not much influence the potted plants ornamental appearance. 4. Easy to insert into soil:The soil hygrometer is made of high quality plastic material, hard, tough, wear resistant and durable, which is not afraid of stones in the soil. Besides, the sharp triangle shape tip of the soil hygrometer is convenient for you to insert it into the soil. 5. Scope of application:The soil hygrometer is universal to most type of soil, which is widely suitable for flower, cactus, succulent plant, magnolia, rose and other potted plants. Description: You can put the soil hygrometer on your plant pot for long time monitoring the soil moisture data at real time. Specifications: Voltage:3V Current:10uA Model:WN1803 Size:131 * 25.1 * 10.9mm Power:0.03W Material:plastic + electric component Battery:CR2032 (not included) Packing:English version Package Included: 1pc * Soil hygrometer (without battery) Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.