CalAmp TTU-720

CalAmp TTU-720 is a perfect trailer and asset GPS tracker for continuous multi-year use. The device features an internal non-rechargeable 57Ah battery (7 years life at 1 message/day), GSM/GPRS or HSPA configurations, 3-axis accelerometer, built-in motion sensor, geofences, and IP67 casing.

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?"}