UBIBOT GS1-PL4G1RS is an advanced version of the GS1-AL4G1RS. GS1-PL4G1RS supports WiFi and Cellular connection and also has a GPS positioning module for real-time location tracking, which makes it suitable for purposes where real-time tracking is required, like logistic vehicles, transport vehicles, etc. An external BD GPS Active Antenna is connected to the device, which allows for the reception of satellite signal. Users will be able to monitor not only the physical location of moving refrigerated vehicles but also the temperature & humidity of their environment. The route of the moving vehicle can be recorded and sent to the platform via the mobile data network.UBIBOT GS1-PL4G1RS has built-in temperature, humidity, and ambient light sensors. It supports multiple RS485 external probes; only one of each type can be connected at a time.We provide a UbiBot Global SIM card for each device for free.GS1-PL4G1RS-1DS has the same features as UBIBOT GS1-PL4G1RS. Besides RS485 probes, it can also support 1 x DS18B20-Audio Temperature Probe, and only one of each type of probe can be connected at a time; Wind Speed Sensor is incompatible with DS18B20-Audio Temperature Probe.