CalAmp LMU-600

CalAmp LMU-600 is a great GPS tracker to find stolen vehicles, optimize vehicle overhead, equip rented autos, supply info for automotive insurance, etc. when an internal backup battery and the ability to interrupt the vehicle start are required. It features a super-sensitive GPS technology on GSM/GPRS, an internal 200mAh backup battery, and inputs/outputs for starter disabling, panic button, and other accessories.

Protocol: calamp Manufacturer: CalAmp Forum discussion
Device Information
Generic device information.
firmware_version: Firmware Version
AT Command
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?"}