The IP67 rated XL-TrashSonar-WR line provides reliable detection of trash or rubbish level in many waste management applications. These ultrasonic rangefinders offer 1cm resolution, 3.0-5.5VDC operation, a narrow beam pattern, high power output, noise rejection, and automatic calibration. The output options for this ultrasonic sensor line are pulse-width, analog voltage, and asynchronous RS232 serial. Additionally, the MB7137 offers the I2C interface. Please see datasheet for full specifications.