Real-time water level monitoring: This solar-powered digital water tank level indicator provides measurements from 1 to 5 meters with an accuracy of ±0.05 m and a resolution of 0.01 m, helping prevent unexpected shortages or overflows without constant manual checks. Dual power design: The receiver can run on 3 AAA batteries or via the included Type-C power cable. The transmitter has a built-in solar panel that automatically charges 6 AAA NiMH cells when sunlight is available, reducing the need for frequent battery changes. Weatherproof outdoor ready: The transmitter is IP65 rated, resisting water jets from any direction, making it suitable for outdoor installation under various weather conditions while maintaining reliable monitoring throughout the year. Flexible display and alerts: The user-friendly interface offers adjustable backlight, 12H/24H time formats, indoor temperature display in C/F (-35.6 C to 50.0 C), an alarm function, and a low transmitter battery alert, delivering comprehensive water level monitoring. Use scenarios: - Irrigation tanks for farms and gardens - Rainwater harvesting systems and outdoor storage tanks - Outdoor livestock water troughs and other external water storage applications