1. Most potted plants are killed by lack of or overwatering. The soil moisture sensor will whistle when the soil is running out of water to remind you to water the plants. So you don't have to water the plants too much for fear of water shortage. 2. Don't bother to look at the numbers of various indicators, but water them when you call and simplify your life. 3. The cute can be used as an ornament for flower pots to make your garden more beautiful. 4. Very simple to use. Just remove the plastic sheet at the bottom and it will start working. When you simply insert it into the soil, it makes the call of birds or frogs, but once moisture is detected in the soil, it stops singing. 5. The standard size button battery can last for one year. At the same time, there is a light sensor at the bottom of the product, which stops working at night so as not to disturb your rest. After removing the transparent film behind the bird seat, the battery will be electrified. If you want to turn off the