Pro-Wave Electronics Ultrasonic Liquid Level Sensors enable the contact-free measurement of liquid level height within a sealed container. These IP67 sensors feature RS485 and UART configurations. Non-contact ultrasonic measurement allows these sensors to be placed directly below the container, making them suitable for hazardous liquids, as well as various high-density sealed containers. Pro-Wave Electronics Ultrasonic Liquid Level Sensors feature an operating voltage of 2.8VDC to 5VDC, and a resolution of 1mm.