B09 RFID Access Control Device Features: High quality and high security. Sensitively and response quickly. 1000 standard users optianal. Support card, password, password plus card to open the door With door bell button Classical Appearance with useful function. Professional design for Home and Office. Support one-door Can be used as a stand alone keypad Doesn't need to connect on the computer, can works alone Application: Home/ hotel/ office/ apartment/ foctory, etc Specifications: User Capicity: 1000 user Dimension: 75*117*22mm(L/H/W) Working Frequency: 125KHz Working Voltage: DC12V Working Current: