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  2. Manual fire alarm activation - Wikipedia

    en.wikipedia.org/wiki/Manual_fire_alarm_activation

    Manual fire alarm activation requires human intervention, as distinct from automatic fire alarm activation such as that provided through the use of heat detectors and smoke detectors. It is, however, possible for call points/pull stations to be used in conjunction with automatic detection as part of the overall fire detection and alarm system .

  3. Telephone keypad - Wikipedia

    en.wikipedia.org/wiki/Telephone_keypad

    For example, in the UK, users can order a 7:30 am alarm call from a BT telephone exchange by dialing: 55 0730#. [8] In the Americas and a number of other countries, most dials and, later, keypads also bear letters according to the following system: A standard telephone keypad

  4. Flipper Zero - Wikipedia

    en.wikipedia.org/wiki/Flipper_Zero

    Flipper Zero is designed for interaction with various types of access control systems, radio protocols, RFID, near-field communication (), and infrared signals. [6] [7] To operate the device, a computer or a smartphone is not required; it can be controlled via a 5-position D-pad and a separate back button.

  5. Knox Box - Wikipedia

    en.wikipedia.org/wiki/Knox_Box

    If the key to a district's Knox Box is stolen or copied, a thief can enter any building in the area that has a Knox Box. All Knox commercial boxes have a standard tamper switch which can be wired to the building's fire alarm control panel to sound a supervisory alert if the box is opened.

  6. Rolling code - Wikipedia

    en.wikipedia.org/wiki/Rolling_code

    A rolling code (or sometimes called a hopping code) is used in keyless entry systems to prevent a simple form of replay attack, where an eavesdropper records the transmission and replays it at a later time to cause the receiver to 'unlock'.

  7. Panic button - Wikipedia

    en.wikipedia.org/wiki/Panic_button

    A personal safety alarm starts sounding once the emergency button is pressed. A personal alarm is a small hand-held electronic device with the functionality to emit a loud siren-like alarming sound. It is activated either by a button, or a cord that, when pulled, sets the siren off.

  8. Car key - Wikipedia

    en.wikipedia.org/wiki/Car_key

    Car key in ignition Car ignition and steering wheel lock. A car key or an automobile key is a key used to open and/or start an automobile. Modern key designs are usually symmetrical, and some use grooves on both sides, rather than a cut edge, to actuate the lock.

  9. Smart key - Wikipedia

    en.wikipedia.org/wiki/Smart_key

    A Nissan Fuga intelligent key. A smart key is a vehicular passive entry system developed by Siemens in 1995 and introduced by Mercedes-Benz under the name "Keyless-Go" in 1998 on the W220 S-Class, [1] after the design patent was filed by Daimler-Benz on May 17, 1997.