HB100 Human Presence Radar Sensor 10GHz, Range up to 20m

The HB100 sensor is a type of microwave motion sensor module that is used to detect the presence of moving objects. It works by emitting microwave signals and then measuring the reflection of those signals off of objects within its detection range. The sensor is able to detect motion within a range of up to 20 meters, and it has a detection angle of 360 degrees.

The HB100 sensor emits continuous wave (CW) signals at this frequency and measures the Doppler shift of the reflected signals to detect motion. The Doppler shift is a change in the frequency of the reflected signal caused by the motion of the object relative to the sensor, which allows the sensor to determine the speed and direction of the object.

Quick Spec

  • Range: Up to 20m
  • Low current consumption
  • CW or Pulse operation
  • Flat profile
  • Long detection range
  • X-Band Frequency 10.5 GHz
  • Operating Voltage 4.5V to 5.2V



Interfacing HB100 with Arduino

hb100_doppler_sensor_arduino_sketch Arduino Code for HB100

Arduino Code for HB100

    #include <FreqPeriod.h>

    double lfrq;
    long int pp;

    void setup() {
      Serial.println("FreqPeriod Library Test");

    void loop() {
      pp = FreqPeriod::getPeriod();
      if (pp) {
        Serial.print("period: ");
        Serial.print(" 1/16us / frequency: ");

        lfrq = 16000400.0 / pp;
        Serial.print(" Hz ");
        Serial.print(lfrq / 31.36);
        Serial.println(" Mph");


Shipping List

  • 1 x HB100 Microwave Sensor

HB100 Human Presence Radar Sensor 10GHz, Range up to 20m

  • Brand: Generic
  • Product Code: HB100
  • Weight: 0.009kg
  • Product Status : Active
  • Stock

    Warehouse Stock Status Location
    Centurion No Stock
    Stellenbosch No Stock
    Bulk Location No Stock

    We ship free of charge between branches to complete your order.

  • R79.00 (Inc Tax: R90.85)

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Tags: hb100, microwave, sensor, distance