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The Honeywell HMR3200/HMR3300 are digital compass solutions for use in precision heading applications. Honeywell's magnetoresistive sensors are utilized to provide the reliability and accuracy of these small, solid state compass designs. These compass solutions are designed for generic precision compass integration into customer systems using a 5-voltage logic level serial data interface with commands in ASCII format. The HMR3200 is a two-axis precision compass with three orthogonal magnetoresistive sensors, and can be used in either vertical or horizontal orientations.