Features: Professional manufacturing, stable performance, high accuracy and good reliability. Manufactured with superior material, optimal durability. It works by installing a series of RFID tags along the route (each tag has a unique global identification number) and allowing patrol personnel to read the tag using a handheld reader. The digital tag is recorded along with each associated tag and then uploaded via the communications adapter for processing and verification by the computer. The results are displayed on the screen, printed or emailed to examine the manager's performance and patrol personnel's data (attendance, patrol location, timeliness, accidents, etc.). Specification: Condition: 100% Brand New Material: ABS plastics Color: Black/White (optional) Size: 40*4.5mm/1.6*0.2in Chip: NTAG216 Storage capacity: 888bytes Working frequency: 125 KHz Communication rate: 106KBoud Reading and writing distance: 2.5~10cm Reading and writing time: 1~2ms Working temperature: 60°C Wiping life: > 100,000 times Data saving: > 5 years Package List: 10 * 125KHZ Patrol Tags Note: Please allow slight dimension difference due to different manual measurement. Thanks for your understanding!