AC-B31 Indoor PIN Standalone Controller


AC-B31 is part of Rosslare’s indoor standalone controller series, ideal for residential and commercial access applications. It is an industry favorite for those looking for a basic access controller that simply gets the job done.

The AC-B31 is easy to program and easy to use. This 500-user, PIN, standalone controller is packed with features such as multiple user levels and operation modes, Programmable Siren and Lock Strike Release Times, code search, and back & case tamper protection yet is still considered a fairly “basic” model.

  • Advanced 500-user standalone controller
  • Two tri-colored LEDs and internal buzzer indicators
  • Lock strike and auxiliary relay outputs
  • Input for Request to Exit (REX) button
  • Internal case and wall tamper detection
  • Supplied with an installation kit including a security screw, security screw tool, mounting screws and a mounting template
  • Internal suppression diode (1N4004)


  • Three user levels: Normal, Secure, Master
  • Three operational modes: Normal, Bypass, Secure
  • Programmable Siren Time
  • Programmable Lock Strike Release Time
  • Bell, chime, siren and strobe when used with the BL-D40