1. Most potted plant deaths are caused by water shortage or overwatering. This lovely soil humidity sensor will whistle when the soil is dry to remind you to water the plants, helping prevent overwatering. 2. No need to read numbers on indicatorssimply water when it signals. Makes plant care easier. 3. Cute design doubles as a decorative ornament for flowerpots, enhancing the beauty of your garden. 4. Simple to use: just remove the plastic sheet at the bottom to activate. Insert the probe into the soil. It will emit bird or frog sounds when the soil is dry, and stop when sufficient moisture is detected. 5. Powered by a standard button battery that lasts up to one year. Features a light sensor that automatically disables sound at night to avoid disturbance. After removing the insulating film, the device powers on. To disable the sound, press both probes simultaneously or insert them into wet soil. Once inserted into moist soil, the sound should stop within seconds. If sound continues, water the plant. The built-in optical sensor turns off the reminder at night but may briefly signal during daylight to indicate battery function. Watering: When the device signals, check soil moisture and water if needed. Color: Yellow/Black Material: Resin Size: 18 x 9 cm Package Contents: 1 x Soil Moisture Meter Note: Clean the probe tip periodically with fine abrasive paper or steel wool. The device detects soil moisture levels. If it continues signaling after watering, check soil conditions. Ideal pH range for most indoor plants is between 3 and 8.