... SMS, Encrypted Protocol ; GPRS, TCP/IP over PPPGPS module Holux M89 or Royaltek REB-3571I/O Inputs Emergency Button,2xLow ... alarm, Anti-theft alarm, Power discarding, GPS antenna shourt circuit, GPS antenna open circuit, GPS receiver failure, illegal ignition, illegal door-opening ... valid location, and current operating mode of the GPS.Miles by GPS Advanced algorithm to calculate the vehicle's mileage ...