🐫【TK103B】GPS/GSM station positioning. 🐫【Widely Used】Set multiple functions of security, tracking, monitoring surveillance, emergency alarms and management in its entirety. Support 9-36V, so it can be installed on Bus, taxi, truck ,personal car, business car etc. 🐫【Easy to Install】Built-in GPS,GSM antenna, Support GPS and LBS (Location based service) double tracking solutions. Input sim card, Turn on the device, Support to set 5 admin number monitor the GPS device. 🐫【GPS Tracker 】Based on the GSM / GPRS network and GPS satellite positioning system, It can track and monitor remote target by SMS or internet. Point-to-point, point to group, group-to-group monitoring. 🐫【No Reason To Return 】 "COROTC" Professional GPS Tracker Manufacturer. 30 Days Money Back, 30 Days Exchange. If you are not completely satisfied with your order, we will refund you.