Fermion: URM07 - UART Low-Power Consumption Ultrasonic Sensor (20~750cm)

DFRobotSKU: SEN0153
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An ultrasonic sensor measures distance by calculating the time difference between sending a signal and receiving an echo from an object. It uses echolocation to measure distances, just like a bat.

The URM07 is an ultra-low-power sensor. The effective range is up to 7.5m, and it has a wide-range power supply of 3.0 - 5.5V. It is directly compatible with 3.3V or 5V devices such as Arduino, Raspberry Pi .etc. The average operating current is only 5mA and the standby current is only 14uA.

According to the principle of ultrasound sensors, the accuracy of the distance value will be affected by the air temperature and wind direction, so using a DFRobot URM07 built-in temperature sensor, you can read the ambient temperature, and automatically calculate temperature compensation. The sensor uses an integrated ultrasonic probe with a detection angle of approximately 60° in a compact and lightweight unit. The unit uses a 2.54mm pitch 4Pin interface, using UART communication, compatible with most common microcontrollers.

URM07 UART ultrasonic distance sensors have undertaken rigorous road testing and optimization. We guarantee that this sensor has first-class response speed, ultra-high stability, the highest sensitivity and ultra-low power consumption. If you have harsh environmental requirements for your sensor performance in your design, the URM07 is definitely the best choice.

You can find the controller shown in the diagram below, here

Connection Diagram - DFRduino Leonardo


  • Streamlined design
  • High Stability
  • High Sensitivity
  • Built-in temperature compensation
  • Low Power Consumption
  • Reverse polarity protection (short-term protection)
  • Overvoltage Protection
  • Convenient connection and Usage


  • Operating Voltage: 3.0 ~ 5.5V DC
  • I/O Operating Mode: Open Drain (OD), integrated pull-up resistor
  • Effective Range: 20 ~ 750 cm
  • Direction Angle: 60 °
  • Standby Current: <14 uA (mainly by the power chip consumption, the core circuit consumption <1uA)
  • Peak Current: <9 mA
  • Average Current: <5 mA (measured under continuous measurement, for reference only)
  • Distance Resolution: 1cm
  • Distance Error: 1%
  • Operating Temperature Range: -10 ~ 70 ℃
  • Temperature Error: ± 1 ℃
  • Operating Humidity Range: RH <75%
  • Acoustic Frequency: 38 ~ 42KHz
  • Boot Start Time: <20ms
  • Measurement Period: <60ms
  • Dimension: 27mm x 27mm
  • Weight: 4.2g Approx.


Package Contents

  • 1x URM07 - UART Low-Power Consumption Ultrasonic Sensor (20~750cm)

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