12 ways to identify the attendance: Fingerprint and Password. 2Up to 600 fingerprint memories and 100,000 transaction records contained. 3Adopt energy saving fingerprint sensor and power management function, which makes time tracking easier and reduces management workload. 4Support U disk to download or upload attendance records and fingerprint figures, no need need software. 5Support USB Flash Drive Download + USB Communication. This machine with 2.4 inches LCD screen adopts advanced fingerprint identification technology, which effectively solves the fingerprint identification problems caused by fingerprint obscurity or finger injury. Its sensitivity and efficiency will help you to eliminate the worry about handling with the attendance records for employees.This machine fits for staff attendance in offices, factories, hotels, schools, etc. Features: 2 ways to identify the attendance: Fingerprint and Password.Up to 600 fingerprint memories and 100,000 transaction records contained.Strictly follow the national product standard and adopt the advanced fingerprint algorithm, fiting for staff attendance in offices, factories, hotels and schools.Adopt energy saving fingerprint sensor and power management function, which makes time tracking easier and reduces management workload.2.4 inches TFT color display screen will make your operating interface intuitive and clear.Support U disk to download or upload attendance records and fingerprint figures, no need need software.Support USB Flash Drive Download + USB Communication.Specifications: Plug: US/EU/UK/AU 100-240V Screen: 2.4 inches TFT Color Screen Fingerprint Sensor: (Energy-saving) Optical Fingerprint Sensor (Resolution:500DPI) CPU: 32bit CPU Power Consumption: 5W Fingerprint Capacity: 600 Log Capacity: 100,000 events Communication Mode: USB Identification Mode: Fingerprint, Password USB Flash Drive Up/Download: Available Record Query: Available Rotational Angle: Total Rotational Angle Effective collecting area: 16*16mm Identification Time: 1s Operating Mode: Off-line / Online Authentication Mode: 1:1, 1:N Language: English Voice Prompt: Available Power Management: Auto Sleep Time, Auto Power Off TimePower Adapter: DC 5V/1A Operating Environment: Operating Temp: 0~ +45, Humidity (RH): 20%~60% Size: 16.5*12*3.5cm/6.5*4.7*1.4in Package Weight: 462g/16.3oz Package List: 1 * Fingerprint Time Clock (Battery not Included) 1 * Adapter3 * Wall Mounting Screw3 * Expansion Tube 1 * User Manual Note: Please allow slight error due to manual measurement. Thanks for your understanding. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.