Queclink GV600MG

Queclink GV600MG is an LTE rechargeable ruggedized trailer GPS tracker. The device features Global LTE Cat M1/NB1 connectivity with 2G fallback, BLE 4.2 support, 1-Wire interface, RS232 port, low power alarm, power on alarm, special alarm based on digital/analog input, geofencing, 5800 mAh battery, IP67-compliant casing, 

Protocol: queclink Manufacturer: Queclink Forum discussion
AT Command
Send custom AT command to device
cmd: Command to send, after AT+
payload: Command payload after password and up to count number: ',FFFF$' will be appended automatically by server
password: Device password
Activate digital outputs
Custom Command
Send custom command to device
payload: Command payload
wait_ack: Wait ACK
Activate digital outputs