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TFB (Tri-Function Box)

Intelligent Access Controller Button – Designed to Support Many Important Benefits of the PAC-BLU Access Control System



PACLOCK’s TFB (Tri-Function Box) was specifically designed to support many of the important benefits of the PAC-BLU system. When combined with an ACCESS Series intelligent controller, the TFB allows you to fully leverage the system’s special features.

Learn more about PAC-BLU, Enterprise Keyless Security from PACLOCK, here.



  • The TFB has a button that, when pressed, wakes up the PAC-BLU system. By going to sleep, any systems running on battery power will maximize the lifespan of the batteries. By pressing the button, the system will wake up and begin broadcasting its Bluetooth availability
  • The button also serves as the interface for any emergency access or non-smartphone access. By pushing the button in a morse-code style, the PAC-BLU system will unlock when a proper code has been entered. PAC-BLU stores 99 unique, one-time use codes for use as the “Quick-Click” feature. The button also has a tri-color feedback LED system built in that offers visual cues to the user during the operation of the system
  • 9V Emergency power access ports are located at the bottom of the TFB. These weatherproof terminals can be used to connect a standard 9V battery should the hard-line or internal battery power of the PAC-BLU system fail. The 9V battery has sufficient power to not only operate the CPU, but also power the connected endpoint to unlock. Once unlocked, the user can enter the locked area and correct the failed power situation.
  • One TFB can be connected to multiple ACCESS Series products

Specs & Dimensions


  • Size: 2.00” x 3.00” x .1.25”
  • Compatible with PAC-BLU’s ACCESS and ACCESS-Mini
  • Easily attaches with 4 screws
  • Button activates the “Wake” feature of ACCESS and ACCESS-Mini as well as the patented “Quick-Click” feature
  • LED visual feedback
  • Emergency 9V battery terminals


Works With