For GT800, there is a command to enable receiving this data from device, which you can probably talk to the manufacturer and find out. once you send the command to device with the required frequency device will send the value at the desired/set interval.
Hi
I Have GT800 ,it is connected to Fuel sensor but not receiving anything releated to Fuel in the Data .May know what is the issue?
Data From Device to Traccar--- HEX:
78780a1344040400020016d1bc0d0a
Thanks