- Solar powered transmitter: built in solar panel charges the transmitter, eliminating frequent battery changes and enabling continuous water level monitoring without external power. - Precise water level monitoring: track tank levels from 1 to 5 meters with ±0.05 m accuracy and 0.01 m resolution; includes visual display and audible alarm for reliable resource management. - Dual temperature tracking: monitor indoor ambient temperature 0C to 50C and water tank temperature -40C to 60C with ±1C accuracy; display can be in Celsius or Fahrenheit. - IP65 weatherproof transmitter: protection against rain splashes and dust ingress ensures reliable operation in various weather conditions; compact receiver measures 13.5 x 2.6 x 8.4 cm and fits indoors. - Applications and scenarios: ideal for rural or remote water tanks with limited power where solar charging is beneficial; suitable for greenhouses or farms needing coordinated tank level and ambient temperature monitoring to optimize watering; durable for outdoor storage or dusty environments where IP65 protection maintains reliability.