Skip to content

3 units will be available shortly.

Express post shipping available (product is on backorder)

The weather resistant MB7040 I2CXL-MaxSonar-WR sensor features centimeter resolution and an I2C interface, and provides short to long distance detection and range information from 20cm to 765cm for the nearest detectable target. Its read rate is up to 40Hz.

The MB7040 from the I2CXL-MaxSonar-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 3/4 inch PVC pipe fittings (this product has multiple housing options available).

The I2CXL-MaxSonar-WR sensors are factory calibrated to match narrow sensor beam patterns and provide reliable long-range detection zones.

In addition, the MB7040 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.

I2CXL-MaxSonar-WR(MB7040) Beam Pattern


  • Resolution of 1 cm
  • Up to 40Hz reading rate
  • Simple I2C bus interface
  • Easy control of multiple sensors
  • Control up to 127 sensors using two wires
  • 42kHz Ultrasonic sensor measures distance to objects
  • RoHS Compliant
  • 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 +70˚C (-40˚F to +160˚F)
  • Real-time automatic calibration (voltage, humidity, ambient noise)
  • Firmware filtering for better noise tolerance and clutter 
  • Weather Resistant (IP67), optional Chemical Resistant F-Option
  • IP67 rated, I2C interface ultrasonic sensor
  • Maximum range of 765 cm (300 inches)
  • Long-range, narrow detection zone


The I2CXL-MaxSonar-WR(MB7040) appears in the following collections: