URM04 v2.0 Ultrasonic Sensor

The URM04 v2.0 Ultrasonic Sensor is developed based upon our popular URM37 ultrasonic sensor.
SKU: SEN0002

Availability: 4 In Stock


Free Shipping on orders over $50
(USA Only)

Economy shipping for $5.99 (USA Only)
Or choose UPS or USPS Priority Mail.

International Shipping also available.

US Schools/School Districts can order by Purchase Order



The RS485 interface allows a number of sensors working together. Up to 32 URM04 may be connected together in a network.

The ultrasonic sensor allows you to determine the exact distance of an obstacle in the sonar field of view. The cleverness of your robot will depend on a sensitive sensor similar to the one bats use to know their position and track prey. With advanced programming, you can design compensators in order to perfectly control your motors according to the obstacle's distance.

NOTE: This sensor REQUIRES a RS-485 interface. It can not be connected directly to an Arduino. To make the connection easily we recommend using our IO Expansion shield v5.


  • URM04 v2.0 Ultrasonic Sensor (1 unit).
  • Wire with 4p JST connector(1 unit).

Additional Info

Additional Info

  • Power Supply: +5V
  • Current: <20mA
  • Working temperature: -10℃~+70℃
  • Detecting range: 4cm-500cm
  • Resolution: 1cm
  • Frequency: 40KHz
  • Interface: RS485
  • Units: Range reported in cm
  • Temperature sensor: 12 bits reading from serial port
  • Default Device Address: 0x11
  • Default Device baudrate: 19200
  • Size: 34x51 mm
  • Weight: 30g
Data Sheets
Minimum Age No
Other SKUs No