Plants Watering Reminder Soil Moisture Detector Soil Humidity Tool For Indoor Outdoor Plants Succulents HydrationMaterial: plastic, ironPower supply: 1 AAA battery (not included)1. Three different color lights remind plants of water shortage status. The green light indicates that the soil moisture is good and no watering is needed; the orange light indicates that the soil moisture is moderate and watering is necessary; the red light indicates that the soil is extremely dry and needs to be watered immediately.2. Use a AAA battery, which is easy to replace and lasts for a long time.3. The scale is clear, and the depth to which the tester should be inserted into the soil is determined according to different plant types. Tropical plants (1-3cm): such as African violets, lilies, Chinese Dieffenbachia, etc.; indoor plants (3-5cm): such as ivy, spider plant, figs, etc.; desert plants (5-7cm): such as aloe, leaf orchid, dragon's blood Tree, tigertail orchid, etc.4. Not suitable for substrates with large gaps such as moss, sand, rubble, coarse coconut chaff, etc.5. Simple to use, insert the tester into the soil and press the switch button for 3 seconds to use; if you plan to deactivate it, please press switch button for 3 seconds to protect battery life