Product Description: User capacity: 3000 Working frequency: 125KHz Card type: EM card Card reading distance: 1-5CM Identification method: card, password, card + password Keypad type: touch keypad button Backlight: blue backlight keypad Open the door input: all the way to open the button input Doorbell output: one way wired doorbell output Working voltage: DC 12V ± 10% Working power supply: <100mA Working temperature: 0 ° C ~ 60 ° C