Feature: 1. 1. The death of most potted plants is caused by lack of water or excessive watering. When the soil is short of water, these beautiful soil moisture sensors will whistle to remind you to water the plants. This way you don't have to worry about growing too much water due to lack of water. 2. 2. Don't care about the numbers on the different indicators, just water the phone while talking, and you can live easily. 3. 3. The design can be used as an ornament for flower pots to make your garden more beautiful. 4. 4. Very easy to use. Just pull the plastic plate at the bottom to start working. If you just put them on the ground, it will make the calls of birds or frogs, but once it detects moisture on the ground, it will stop singing. 5. 5. Standard size button batteries can be used for one year. At the same time, there is a light sensor at the bottom of the product, which will stop working at night so as not to disturb your rest. 6. Start-up method: After removing the transparent film behind the bird seat, the battery will be energized to operate. To turn off the singing function, please touch the two probes at the same time, or insert the probes into moist soil. 7. Installation: After inserting the probe into the soil, the singing should stop after a while. If the singing continues, please water your potted plants. The built-in automatic optical sensor will automatically turn off the singing reminder function at night, but the friend of plant will still automatically sing when it senses sunlight to indicate that the battery is full. 8. Sensitive plants that need to be taken care of carefully: Based on the different humidity trigger points of these plants, please adjust the probe depth carefully. The drier the soil, the deeper the probe needle must be placed. 9. Fertilization: Friends of Plant can sense the pH value in the soil and whether the fertility of the soil is too low. If you continue to sing after watering, please check the pH of the soil. Generally, the pH value of indoor plants should be between 3 and 8. 10. Watering: Watering is required only when the friends of the plant sing once every 15 seconds. Specification: Color: yellow Material: Resin Size: 18 * 9cm Package List: 1 * soil moisture mete Note: The probe may need to be cleaned regularly with fine sandpaper and steel wool.