Ultrasonic Level Meter is a kind of non-contact measuring instrument with high reliability, high cost performance and easy to install and maintain. It does not need to contact the medium to meet most of the requirements of Level measurement. It is suitable for water level monitoring of lakes, river channels, reservoirs, open channels, tidal level, etc. RS485 output can be easily connected with PLC of upper computer to realize the purpose of real-time monitoring and early-warning control. Ultrasonic Level Meter has high precision, strong anti-interference ability. Not affected by temperature, humidity and wind, simple installation and debugging low power consumption, available serial port and upper computer debugging