CalAmp LMU-400

CalAmp LMU-400 is a great GPS tracker to find stolen vehicles, optimize vehicle overhead, equip rented autos, 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/CDMA 1xRTT/HSPA, an internal 200mAh backup battery, optional 3-axis accelerometer, an integrated buzzer, and a starter interrupt relay.

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?"}