The GX GSM is a modem GPS accessory. The GX GSM is a cellular modem; providing a mobile internet for the system and connection to the VRM Portal. It works on 2G and 3G networks.
It includes a built-in GPS receiver. When the optional GPS antenna is installed, the system can be tracked as well as Geo-fenced on the VRM Portal.
Note that many telecom operators are in the process of shutting down their 3G networks. Make sure to consider the replacement product, the GX LTE 4G, as well.