5.8GHz Microwave Radar Module

DFRobotSKU: SEN0521
Sale price £15
incl. VAT
excl. VAT
Only 2 units left

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This DFRobot microwave sensor can transmit an electromagnetic wave of 5.8GHz. It can detect the difference between the transmitted wave and the reflection wave to identify whether there is an object moving in the detection area.

Different from the traditional sensors that can only detect human presence by detecting big body movements, this microwave sensor can perform well in detecting small movements like breathing so as to determine human presence even if the person is sitting or sleeping. The detected result can be output through the serial port or high/low level of the I/O port.

Featuring high reliability and sensitivity, and strong anti-interference, it is small and easy to integrate, which can be widely used in fields that require motion detection, such as lighting, security, home, home appliances, hotels, garages, buildings, traffic and more!

Connection Example - Arduino


  • High reliability
  • High sensitivity
  • Strong anti-interference


  • Operating Voltage: 4.5~5.5V
  • Operating Current: 22mA
  • Detection Distance: 11m
  • Equivalent Transmission Power: 3-5dBM
  • Beam Angle: 120x120°
  • Modulation Mode: FMCW, CW
  • Operating Frequency: 5.8GHz
  • Operating Temperature: -40~85℃
  • Baud Rate: 115200
  • Dimension: 20x18mm



Pin Label Description
R Sensor serial receive
T Sensor serial transmit
O Output control signal

Package Contents

  • 1x 5.8GHz Microwave Radar Module
  • 1x 5-pin header

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