UMKa 302 is a flagship series of GPS/GLONASS trackers with high performance and rich communication options. The device features 4 inputs, 1 output, 250 mAh backup battery, accelerometer, Bluetooth support, 1-wire, RS-232, RS-485, dual SIM, iBeacon identification, MODBUS, tachograph, and CAN support, and more.

Protocol: wialon-ips Manufacturer: GlonassSoft Forum discussion
Custom message command
The command is used to send custom messages to the device. It allows to implement additional features necessary for the controller. is added automatically
message: Text of the message
Send custom message command
{"message":"Text of the message"}
Text message
Send text message to device
message: Text message content
Send text message
{"message":"this is message text"}