Description: Material: Resin Size: shown on picture Color: as the pictures show Specification: 1. Most potted plant deaths are caused by water shortage or excessive watering. This lovely soil humidity sensor will whistle when the soil is short of water to remind you to water the plants. So you don39;t have to water plants too much for fear of water shortage. 2. Don39;t bother to look at the numbers on various indicators, just water them when they call, and make your life easier. 3. Cute design can be used as an ornament for flowerpots to make your garden more beautiful. 4. It39;s very simple to use. Just pull out the plastic sheet at the bottom and it will start to work. When you just insert it into the soil, it will make the calls of birds or frogs, but once moisture is detected in the soil, it will stop 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 will stop working at night to avoid disturbing your rest. Start-up and maintenance instructions: 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. Installation of Friends of Plant: After inserting the probe of Friends of Plant 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 the plant will still automatically sing when it senses sunlight to indicate that the battery is full. Note: The tip of the probe may need to be cleaned regularly with fine sandpaper and steel wool. 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. Fertilization: Friends of Plant can sense the pH value in the soil and detect whether the fertility of the soil is too low. If you continue to sing after watering, check the pH of the soil. Generally, the pH value of indoor plants should be between 3 and 8. Watering: Watering is required only when the friends of the plant sing once every 15 seconds. Package List: 1 x Hygrometer Sensor