Product Description:GPS vehicle tracker:Built-in GSM and GPS antennas.Real-time tracking and burglar alarm.With SOS alarm and voice monitoring function.Ignition detection and tele-cutoff(petro/electricity) funtion.Features:GPS+GSM.Built-in high sensitive MTK GPS chip.Tele-cutoff petro/electricity.Built-in ON/OFF power， wide voltage input.Alarm when the power supply is disconnected intentionally.Get location through SMS.Panic button for SOS alarm.With Vibration alarm， ACC detection， Voice-monitor function and Auto failure -restore function.With 3 LED indicators.Input voltage:DC 9-24V.GSM:4 frequency (850/900/1800/1900 MHz).GRPS:CLASS12， TCP/IP.Need to insert card:GSM SIM card (NOTE:Please turn off the power supply when installing the card.The card need to support GSM network and has opened the GPRS function.It will charge fee.Recommended to use a GPS device dedicated traffic card.).Positioning time:Hot start:< 2S.Warm start:< 32S.Cold start:< 38S.Function:GPS+GSM.ACC Ignition signal detection， prompt vehicle status.Can connect external SOS warning button， for emergency call for help.Can connect external Microphone， for remote voice monitoring.Can connect external relay， realize cutting off oil remotely (optional).Can connect external car speakers， for two-way talkback.3 LED indicators:GPS-blue， GSM-green， Power-red.Built-in GSM and GPS antenna， please make sure that the receiving side is upward， and there is no metal shelter above the tracker.This product is a high technology positioning device.Please let the professional companies or workers install and debug.Note:Due to different countries have different operators， it's neccessary to activate it before use.Send message "APN:AA， XX， YY" (AA for the local operator name， XX for the user name， YY for the password.User name and password will be provided by operator.).Package included:1 x Power supply 4P cable.1 x Alarm button.1 x Speaker cable.2 x User guide.1 x Order card.1 x Relay.1 x GPS tracker.1 x Microphone