Soil Moisture Meter Sensor Monitor Probe Water Level Hydrometer for Horticulture Agriculture Indoor Potted Plants 2pcs/Set 40JEOOTDTYechs: it is a very helpful tool for the care of flowers, greenhouse, garden, lawn, yard, farm, etc. Plant moisture indicator with portable and lightweight features that are convenient to carry. Indicator showing 3 colors: green flash once only indicates right/yellow flash three times indicates time for water/red flash now indicates water! The automatic plant water sensor can always be left in the soil to monitor the growing conditions of the plants and reacts quickly to provide an accurate reading. Indoor Potted Plant Water with battery power, automatically tests soil moisture every 2 hours and warns you about water. Specification: Material: PCBPuquet Includes: 2x Soil Moisture MeterNote: Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.