Product Details: Model Name/Number K90 PRO Usage/Application Essl Type Of Attandance System Finger print Brand Essl Battery Backup YAS Display Type Keypad Language English Power Source Power Adapter, Battery Operated Body Material Plastic Schedule Bell Or Speaker YAS Schedule Bell Speaker YAS eSSL-K90 PRO+ID+Battery backup, also it has 800 fingerprint Capacity, and 800 Card Capacity. It has Door Access Control. Additional Information: Item Code: 1qazx Production Capacity: 200 Delivery Time: 1hr Packaging Details: Fingerprint Capacity 800 Card Capacity 800 Transaction Storage 80,000 Push Data Yes Card Reader Yes Fingerprint Sensor 500DPI Optical Sensor Algorithm Ver 10 LED Indicator Green /Red Schedule Bell/Speaker Mini Speaker Communication TCP/IP, USB-Host Standard Features Inbuilt Battery Backup, Self Service Query, SSR Recorder, Automatic Status Switch, DST, T9 Input Power Supply 12VDC, 1.5 Amps Operating Temperature 0'C to 45'C Operating Humidity 20%-80% Dimension 185x 140x 30mm Relay 12V Support exit readers Push Button Optional: Battery Yes Dual Mode Either SSR Mode or software mode