About this document
JM-VL03 GPS Communication Protocol by anditowilly is a document available to read on EtoBox.
This document outlines the communication protocol for a GPS tracker (JM-VL03). It describes 12 packet types for login, heartbeat, location updates, alarms, commands, and more. Packet formats specify start bits, lengths, and payload details. The protocol supports GPS and LBS location services, multi-fence alarms, online commands, and a CRC checksum. Revisions added 4G base station packets and audio recording integration.
- Author
- anditowilly
- Language
- EN