have some of the following requirement.updating firmware for device over the airstate querying function compress data before sending over to control stationreal time tracking function baleful destroying alarmroute planning checking functionsleep mode function when ignition is off low bat alarm functiongeo fence alarmremote controlling to cut off oil and electricity function over speed alarm intelligent at tempering function sos button functionsauto-reporting station function memory to store data temporary in the event the GPRS is absent.Web Based Servervoltage between 6V - 40Vreasonable pricingpls send me your products specs and i will get back to you asap.