Important Notice Before Purchasing: (1) This GPS Tracker TK303F just can work with 2G GSM network. It does not support 3G,4G Or 5G network. If your country have closed the 2G network, we suggest you choose 3G GPS tracker in our store.(2) These coutries can not use this product Singapore,Korea, North Korea, Japan, New Zealand, Australia. We can locate almost country all around world. Overview: This GPS Tracker Coban TK303F is a car gps tracker which is working based on the 2G GSM/GPRS network and GPS satellite positioning system. It set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. It can track and monitor remote target by SMS, Mobile APP and Web tracking platform. Besides, this crawler TK303F is a full featured vehicle tracking device which is designed for a wide variety of vehicle tracking applications. It has multiple I/O interfaces that can be used for monitoring or controlling external devices. It is supported by a wide variety of accessories, such as fuel sensor, shock sensor, siren, remote controller etc. Its built-in GPS receiver has superior sensitivity and fast time to first fix. Its quad band GPRS/GSM subsystem supports 850/900/1800/1900 MHz allowing the TK303F's location to be monitored in real time or periodically tracked by a backend server and mobile devices. System integration is straightforward as complete documentation is provided for GPRS communication protocol. The GPRS communication protocol supports a wide variety of reports including emergency, geo-fence boundary crossings, lo