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I2CXL-MaxSonar-EZ Ultrasonic Range Finder

Sensor Line

Our industrial indoor ultrasonic sensor
component module
RoHs Compliant

The industrial I2CXL‑MaxSonar‑EZ sensors are high performance ultrasonic sensors with high power output, noise rejection, auto calibration, and factory calibrated beam patterns.


Selecting a Product


MB1202 XL-MaxSonar-EZ0

The I2CXL‑MaxSonar‑EZ0 offers the widest and most sensitive beam pattern of any indoor sensor we currently offer. An excellent choice wherever wide beam detection, reliable people detection, or reliable small obstacle detection are required. Price each $44.95. More on this sensor

MB1212 I2CXL-MaxSonar-EZ1

The I2CXL‑MaxSonar‑EZ1 offers a lower hardware gain and a smaller, narrower detection zone than the MB1200. This makes the I2CXL-MaxSonar-EZ1 a great choice for people detection applications. Price each $44.95. More on this sensor
MB1220 High Performance Ultrasonic Sensor
MB1220 High Performance Ultrasonic Sensor

MB1222 I2CXL-MaxSonar-EZ2

The I2CXL‑MaxSonar EZ2 is our most recommended indoor sensor. It offers the best balance between wide or narrow beams and provides a good balance between small and large target detection. Price each $39.95. More on this sensor

MB1232 I2CXL-MaxSonar-EZ3

The I2CXL‑MaxSonar‑EZ3 has high noise tolerance and a narrow beam with more sensitivity than the MB1242. Price each $39.95. More on this sensor

MB1242 I2CXL-MaxSonar-EZ4

The I2CXL‑MaxSonar‑EZ4 has the highest noise tolerance and narrowest beam of any of our indoor sensors. Designed to provides reliable range information to large targets even in environments with noise sources. Price each $39.95. More on this sensor
The I2CXL-MaxSonar-AE Sensors At a Glance
People Detection
Wide Beam
High Sensitivity

Best Balance
 Large Targets
Narrow Beam
Noise Tolerance

Different applications require different sensors. MaxBotix Inc., has divided our product lines into a series of products with varied sensitivity and maximum range to allow you to select the best sensor to meet your needs.

The diagram above shows how each product balances sensitivity and noise tolerance. To view how each sensor will function to different sized targets reference the I2CXL‑MaxSonar‑EZ Beam Patterns.

For further help in selecting a sensor use our Sensor Selection Guide

Sensor Line Specifications

  • 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
  • Virtually no dead zone, objects closer than 20 cm range as 20 cm
  • Operates from 3.0-5.5V
  • Low 4.4mA average current requirement
  • Small, light weight module
  • Designed for easy integration into your project or product
  • Operational Temperature from 0C to +65C (32F to +149F)
  • Real-time automatic calibration (voltage, humidity, ambient noise)
  • Firmware filtering for better noise tolerance and clutter rejection
  • 200,000+ Hours Mean Time Between Failure
  • Quote Request Form: For orders greater than 100 sensors

Reliable Ultrasonic Sensors

The industrial I2CXL‑MaxSonar‑EZ products are a high quality for cost indoor ultrasonic distance sensors. They provide an industrial component module solution that offers easy to use outputs, virtually no sensor dead zone, calibrated beam patterns, stable range readings, low power demands, and a host of other features as detailed in the product datasheets.

The Noise Filtering

The sensor dynamically adjusts its sensitivity to compensate for outside electrical & acoustic noise sources.

The Interface

The I2CXL‑MaxSonar‑EZ interface was designed to be very easy and intuitive to use. The interface uses a simple I2C command set. Using the I2C bus, a user can control up to 127 sensors over two wires.

The Power Requirements

The I2CXL‑MaxSonar‑EZ functions throughout a 3.0V to 5.5V operational voltage range.  This allows for easy integration at either 3.3V or 5V and means that users of low voltage microcontrollers, or those who wish to operate in solar or battery based systems do not have to provide an extra power supply for the sensor.

The I2CXL‑MaxSonar‑EZ sensors have a 4.4mA average current draw at 5.0V and 2.7mA average current draw at 3.3V.

The Controlled Beam Shape

Similar ultrasonic products may have frequent side lobe detection and can even falsely trigger on objects behind or to the sides of the sensor. The I2CXL‑MaxSonar‑EZ offers a controlled beam that is designed to reject small objects (clutter) outside of the central beam area and provides long range sensitivity without detecting frivolous or unwanted targets.

Users are encouraged to pick the product with the sensitivity that best matches their application.  In the I2CXL‑MaxSonar‑EZ product line the product with the widest beam is the MB1202. The product with the narrowest beam is the MB1242.

The Calibration

Each I2CXL‑MaxSonar‑EZ is tested for proper operation at our facility and comes with a factory calibrated beam pattern to help ensure consistent operation of the sensor even from part to part.

The I2CXL‑MaxSonar‑EZ automatically calibrates to its environment before every range reading. This calibration includes compensation for voltage, humidity, acoustic noise, and electrical noise conditions. Temperature compensation for speed of sound changes are not applied.

The Sensitivity to Match Your Application

All users are encouraged to select the lowest sensitivity sensor that still easily matches their target size and distance detection requirements.

For people detection applications: Internal testing of our product shows that people typically have a detection pattern between that of a 6.35mm (1/4-inch) dowel and a 25.4mm (1-inch) dowel.

The MB1212 offers the best balance and is the sensor we recommended for a variety of applications.

Users concerned with only detecting large objects may want to select a sensor with a lower sensitivity such as the MB1232 or MB1242.

Users that desire a wide beam product and wish to detect smaller targets or people to longer distances should choose the MB1202 or the MB1212.

Reference the product datasheets or the I2CXL-MaxSonar-EZ Beam Patterns to get detailed information on how each sensor operates to different targets.

Product Documents

MB1202 Datasheet I2CXL-MaxSonar-EZ0-datasheet
MB1212 Datasheet I2CXL-MaxSonar-EZ1-datasheet
MB1222 Datasheet I2CXL-MaxSonar-EZ2-datasheet
MB1232 Datasheet I2CXL-MaxSonar-EZ3-datasheet
MB1242 Datasheet I2CXL-MaxSonar-EZ4-datasheet
Application Notes
I2C QuickStart GuideUsing an I2C-MaxSonar With an Arduino
Sensor Selection GuideSensor Selection Guide
RoHS ConformityRoHS Declaration of Conformity
CE Declaration of ConformityCE Declaration of Conformity
Reliability DemonstrationMTBF Report
High Resolution PicturesHigh Resolution
Product 3D Models
These 3D model files will download with a different product name.
Key ShotIGES FileACIS 7.0 FileSolid Works Part
STL FileSTEP FileParaSolid Part 
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