GLOBALSAT GH-561 Quick Start User Manual
Page 2
What is GPS?
A system for providing precise location which is based on data
transmitted from a constellation of 24 satellites. It comprises three
segments: (a) the Control Segment, (b) the Space Segment, and (c)
the User Segment.
What is IPX4?
The IPX4 water resistant standard is the level in which a device is
protected against splashing water without any adverse operational
effects. The IPX4 water resistant standard is usually measured by
water pressure.