1. Most potted plant deaths are caused by water shortage or overwatering. This soil humidity sensor will whistle when the soil is dry to remind you to water your plants, helping prevent damage from underwatering. 2. No need to read numerical indicators—just respond when it signals, making plant care simpler and more convenient. 3. The cute design doubles as a decorative ornament for flowerpots, enhancing the appearance of your garden or indoor space. 4. Easy to use: simply remove the plastic insulator at the bottom to activate. Insert the probe into the soil, and it will emit bird or frog sounds when dry. The sound stops automatically when adequate moisture is detected. 5. Powered by a standard button battery that lasts up to a year. Features a built-in light sensor that disables the sound function at night to avoid disturbances. To activate, remove the insulating film under the bird seat. To disable the sound, press both probes simultaneously or insert them into wet soil. After insertion, the sound should stop within moments. If the sound continues, it indicates dry soil—water your plant. The optical sensor automatically disables nighttime alerts but may briefly chirp upon detecting daylight to indicate power status. Watering guidance: When the device sings, watering is recommended. Color: Yellow 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 for optimal performance. The sensor can detect soil pH and low fertility. If the device continues singing after watering, check the soil pH. Ideal pH range for most indoor plants is between 3 and 8. Content in package is limited to the above; other items not included. Note: Lighting and display settings may cause slight color differences between the image and actual item. Measurement error tolerance is +/- 1-3 cm.