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.