GS-8000F is a super long life span Wireless Security Guard Patrol System for Patrol Guard Tour System, with small size, industrial design, high quality and better performance. It can work under difference environments from -25℃ to 70℃ and be waterproof. The metal body with tough silicon rubber shell makes it stronger, durable and shake-proof fully. Internal ROM can save data safely once battery is out; with wireless uploading data to communication socket, it's very convenient for guard patrolling management. We can know what time and where he patrolled from this probe easily.