CalAmp LMU-4520

The LMU-4520 is a fully weatherproof IP67 dual-mode location and messaging device for mining and construction markets that features both Iridium® satellite and cellular communications as well as connection to the vehicles ECU (Engine Control Unit) interface to deliver fleet management features, comprehensive I/O system and expandable accessories.

Protocol: calamp Manufacturer: CalAmp Forum discussion
Properties
Device Information
device_info
Generic device information.
firmware_version: Firmware Version
Properties
AT Command
at
Send custom AT command to device
payload: Command to send, after AT
Query Current IP Address
{"payload":"$APP ADDR?"}
Query Current Output States
{"payload":"$APP OUTPUT?"}