831B Portable Profeional Soil Moisture Meter Hygrometer Humidity Meter Bar Plant Moisture Sensor Moisture Detector OOTDTY Profeional Plant Moisture Sensor Moisture Monitor Detector Soil Moisture Meter Alarm Hygrometer Humidity Meter Made of fine quality material, practical, easy to operate and use, wide application range, has a long service life. Features:Made of fine quality material, practical, has a long service life. Convenient, easy to operate and use. Simple and intuitive, flashing light prompt. Two detection modes:manual and automatic. Suitable for indoor soil moisture test of various plants and flowers. Specifications:Main material:ABS+PP Color:white+green Battery:2 * LR44 button battery, 1.5V (included) Item size:155 * 26 * 24mm / 6.1 * 1.0 * 0.9in Item weight:12g / 0.4ounce Package size:180 * 30 * 30mm / 7.1 * 1.2 * 1.2in Package weight:18g / 0.6ounce Note:The green light will flash once every two hours when the moisture is right; the yellow light will flash three times every two hours when the soil is dry; the soil will be particularly dry and the red light will flash once every 6 seconds to warn you that you need to water immediately. Packing List:1 * Soil Moisture Meter