The Unattended Electronic Sentinel is designed for long-term unmanned monitoring in border, coastal, remote and complex environments. It supports forward deployment for mobile patrols, temporary emergency security in key areas, remote monitoring, scheduled wake-up for evidence collection, and BeiDou-based alarm functions. It is especially suitable for sparsely populated, harsh or sensitive areas where infrastructure is difficult to deploy, enabling continuous detection of personnel and vehicles, information collection and remote early warning for all-weather intelligent frontline surveillance.