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8 units will be available shortly.

Express post shipping available (product is on backorder)

The weather resistant MB7139 XL-TrashSonar-WR sensor features centimeter resolution and a 10Hz read rate, provides short to mid distance detection and range information from 20cm to 350cm for the nearest detectable target, and  includes various output options: pulse-width, analog voltage, and RS232 serial.

The MB7139 from the XL-TrashSonar-WR line of outdoor sensors is a rugged ultrasonic sensor component module. This sensor comes in a compact and robust PVC housing which meets the IP67 water intrusion standard and matches standard electrical 3/4inch PVC pipe fittings (this product has multiple housing options available).

The XL-TrashSonar-WR sensors are factory calibrated to match narrow sensor beam patterns and provide reliable long-range detection zones.

In addition, the MB7139 offers virtually noise free distance readings through the use of high-output acoustic power combined with continuously variable gain, real-time background automatic calibration, real-time waveform signature analysis, and noise rejection algorithms. This holds true even in the presence of many of the various acoustic or electrical noise sources.

XL-TrashSonar-WR(MB7139) Beam Pattern


  • Resolution of 1 cm
  • 10Hz read rate
  • 42kHz Ultrasonic sensor measures distance to objects
  • RoHS Compliant
  • Read from all 3 sensor outpus: Analog Voltage, Pulse Width, RS232 serial
  • Operates from 3.0-5.5V
  • Low 3.4mA average current requirement
  • Small, light weight module
  • Designed for easy integration into your project or product
  • Operational Temperature from -40˚C to +65˚C (-40˚F to +149˚F)
  • Real-time automatic calibration (voltage, humidity, ambient noise)
  • Firmware filtering for better noise tolerance and clutter rejection
  • 200,000+ Hours Mean Time Between Failure
  • Weather Resistant (IP67), optional Chemical Resistant F-Option
  • Matches standard electrical pipe fittings for easy mounting
  • Maximum range of 350 cm (138 inches)
  • Our most recommended trash level measurement sensor
  • Mid-range, narrow detection zone


The XL-TrashSonar-WR(MB7139) appears in the following collections: