Passive sensor technologies gather target data through the detection of vibrations , light, radiation, heat or
other phenomena occurring in the subject’s environment. They contrast with
active sensors, which include transmitters that send out a signal, a light
wavelength or electrons to be bounced off the target, with data gathered by the
sensor upon their reflection.
RVmagnetics MicroWire is a passive sensor as it gathers information through
the magnetic field
excited around the local environment where the sensor is located.