GARMIN 010-00321-34GPS 18x PC. The GPS 18x is an OEM, high sensitivity GPS sensor for use in automotive, fleet vehicle, and electronics applications that require a small, highly accurate GPS receiver. This high sensitivity, 12 parallel channel, WAAS enabled GPS receiver is available in CMOS level serial or USB 2.0 full speed versions and comes with an integrated magnetic base. The puck like receiver is 2.4 inches in diameter and weighs just a few ounces, making it an ideal solution for applications where space is at a premium. The GPS 18x is offered in three different cable configurations. All three versions of the GPS 18x come complete with non volatile memory for storage of configuration information, a real time clock and raw measurement output data for sophisticated customer applications.