UMKa 312 is an advanced series of GPS/GLONASS trackers with beacon identification and programmability. The device features 2 inputs, 1 output, RS-485 support, accelerometer, 250 mAh backup battery, iBeacon identification, 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"}