1,RFID guard patrol system 2,Strong&Durable 3,USB Communication 4,Low power consumption 101E ... . Communication: USB, high-speed download data.5. Power: 3.6 V lithium battery, long life.6. Light and vibrate to show success ... , Hotels, Car parks, Shopping centers, Leisure park facilities and more... 2. Rounds Personnel, Cleaning rounds, Vending facilities, Amusement machines, Arcades, Care ...