Honeywell Honeywell's three-axis intelligent digital magnetometer (HMR) can detect magnetic field intensity and direction, and simultaneously input x, y and z parameters into the computer. Three separate bridge circuits are used to sense the three axial magnetic fields of xyz. It is characterized by low power consumption, high sensitivity, fast response speed, small size and high reliability. It can directly output the digital signal in NMEA format and communicate with the computer through the RS232/RS485 interface.