Accurate Liquid Level Monitoring: designed for water tanks, this liquid level gauge provides realtime readings with 0.01 m resolution and ±0.05 m accuracy, measuring levels from 1 m to 5 m to support efficient water management. Solar Energy Powered Transmitter: the liquid level transmitter has a builtin solar panel that charges the 1.2V NiMH rechargeable battery when exposed to sunlight, reducing the need for frequent battery changes and enabling offgrid operation. Comprehensive Data Display: the water tank level meter receiver shows both water level and temperature. indoor temperature range is 0°C–50°C (32°F–122°F) and tank temperature range is 40°C–60°C (40°F–140°F), with a resolution of 0.1°C for precise monitoring. UserFriendly Features: backlight on/off, 12h/24h time display, alarm and buzzer controls, and a lowbattery reminder for easy reading and operation in varying lighting and usage conditions. Use Scenarios: Domestic water tanks in homes or rural properties with good sun exposure, enabling continuous monitoring and reducing manual checks. Agricultural irrigation or greenhouse systems that rely on accurate tank level data and offgrid solar power. Remote or offgrid locations such as cabins, camps, or construction sites where battery maintenance is minimized and reliable level and temperature data are needed.