Capacity for Users: 2000 Card Type: Optional IC card, ID card Ultra-low Power: less than 30mA is the standby current. Wiegand Interface: input and output WG26 or WG34 Search time: After reading the card, less than 0.1 seconds Keypad with backlight: Work with ease at night. Interface for doorbells: Encourage the use of an external wired doorbell Methods of access: Pin code, card, card, and pin code Separate codes: Use codes without a card. Modify codes: Users are able to change codes on their own. Remove users using a card No, you can use the keyboard to erase the lost card.