Visionis VIS-3002 Access Control Indoor Only Plastic Housing Keypad and Reader Standalone No Software 125khz Em Card Compatible 500 Users with Internal Doorbell 3 year warranty Use RFID to open door, fashion, security and reliability, Can be used as controller and reader, freely switch, easily operate, With door bell button, convenient for visitor Clear and beautiful luminous keypad, convenient for user to enter password & open door, 500 pcs user capacity, suit for office, villa and household use etc Wiring is very simple; can be done by users without professional knowledge; can be connected with various electric lock and no need to change external wiring Password is 4-6 digits, more security, Anti-vandal, door magnetic detection alarm function Power supply not included, Multiple output format of pressing key, can work with types of controller 500 users capacity With door bell button, convenient for visitor. Input voltage: DC12~24V Idle current: 20mA Max reading distance: 5-8cm Frequency: 125KHz Door bell output load: 10mA Lock output load: 3A Output format of card No.: Wiegand26 Output format of pressing one key: 4bit, 8bit Dimension: 130mm75mm17mm Operating humidity: 0~95% (non-condensing)