Micodus MV33

Micodus MV33 is a cost-effective OBD GPS tracker compatible with 99% of vehicles. The device features vibration alarm, movement alarm, geofencing, overspeed alarm, plug-out alarm, two built-in high-quality microphones, 80mAh internal battery, 

Protocol: micodus Manufacturer: MiCODUS Forum discussion
Properties
Custom Command for and MV22, MV208 device types
custom
Send custom command to devices of type MV22, MV208
Cut OFF petrol for device type MV22, MV208
{"payload":"RELAY,1#"}
Cut off oil and power for device type MV33, MV710, MV720, MV730, MV740, MV790G
{"data":"1,1","command_code":"S20"}