WSSFC-ULB is a Sigfox-ready ultrasonic level sensor to measure solid surface level in trash bin for waste management systems... This level sensor uses ultrasonic technology to measure the solid surface of waste, the principle is to measure the time of flight of the ultrasound pulse in the air environment. The ultrasound pulse will be ejected from ultrasonic transducer, go thru the air and reach the solid surface of the waste, then reflected back to the ultrasonic transducer, the measuring circuit will measure the flight time of the pulse then calculated distance from the transducer to the surface. Ultra-low power design and smart firmware allow the complete Wireless and Sensor package to run on 2 x AA battery 1.5V for 5 years (depending on configuration). It can support all RC zones. Typical Applications: Monitoring the level of trash in the trash bin, solid waste & recycling facility,...