How small motions can be detected?

The necessary motion to cause an alert depends on several parameters

  • the distance to the object
  • the material to penetrate
  • the size and material of the moving object
  • the radar system

E.g for the CPR4

  • at 1 meter distance and a 10 cm brick wall, a millimeter movement will be enough
  • at 5 meters and thicker wall, 10 mm may be needed