Mielta M1

Mielta M1 is a small and efficient vehicle GPS tracking device with GPS, GSM, and Bluetooth 3.0 connectivity working over Wialon Combine protocol. The device features RS-485 and Wire-1 interfaces supporting up to 16 digital sensors, black box for up to 10000 points, built-in accelerometer, remote configurability and a wide range of peripherals.

Protocol: wialon-combine Manufacturer: Mielta Forum discussion
Properties
Custom command
custom
Send custom command to device
hex: Payload is encoded as HEX string
payload: Text or hex data to send
Send string 1234
{"payload":"1234"}
Send string 1234 in hex
{"hex":true,"payload":"31323334"}