• TermDescription
  • Passive Infrared Detector (PIR)

    A motion sensing device, often used for intrusion detection systems, can also be used as a REX to unlock a door as someone wishing to egress approaches.

  • PLC

    Programmable Logic Controller: a small industrial computer that controls one or more hardware devices.

  • Proximity

    A common access card technology, proximity uses radio frequency to communicate between a card or tag and a reader without physical contact.

  • PSIM

    Physical Security Information Management