AVL-50 4G User Manual
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TTW-AVL504G-UM002
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1
Introduction
The AVL50 4G is a powerful CAT-M1, CAT-NB1, LTE GPS locator designed for a wide variety of
vehicle tracking applications. They have multiple I/O interfaces that can be used for monitoring or
controlling external devices. The built-in GPS receiver has superior sensitivity and fast initial
positioning. Their multiband LTE Cat-M1 and Cat-NB1 allow the AVL-50 4G
Series’ location to be
monitored in real time or periodically tracked by a backend server and mobile devices. System
integration is straightforward as complete documentation is provided for the full featured @Track
protocol. The @Track protocol supports a wide variety of reports including emergency alarm, geo-
fence boundary crossings, as well as external power supply monitoring and position reports.
Table 1.
AVL50 4G Protocol Reference
SN Document name
Remark
[1] AVL50 4G @Track Air Interface Protocol
The air protocol interface between
AVL50 4G and backend server.
Table 2.
Terms and Abbreviations
Abbreviation
Description
RXD
Receive Data
TXD
Transmit Data
VIN
External DC Power Input
IGN
Ignition
OUT1/IN1
Output 1/Input 1
OUT2
Output 2
GND
Ground
1.1.
Reference
1.2.
Terms and Abbreviations
