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  2. Sensormatic - Wikipedia

    en.wikipedia.org/wiki/Sensormatic

    Sensormatic Electronics Corporation was purchased by Tyco International in 2001. The acquisition was executed by a merger of Sensormatic with a subsidiary of Tyco. Sensormatic is frequently called by the name of its parent company ADT, formerly ADT/Tyco. A product from Sensormatic is the Supertag, a hard loss prevention tag. The Supertag took ...

  3. ADT Inc. - Wikipedia

    en.wikipedia.org/wiki/ADT_Inc.

    ADT Inc., formerly The ADT Corporation, is an American security company that provides residential and small business electronic security, fire protection, and other related alarm monitoring services throughout the United States. The corporate head office is located in Boca Raton, Florida. [5]

  4. Motion detector - Wikipedia

    en.wikipedia.org/wiki/Motion_detector

    A motion detector attached to an outdoor, automatic light. A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection).Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.

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  6. AOL Mail

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    AOL Mail is free and helps keep you safe. From security to personalization, AOL Mail helps manage your digital life Start for free

  7. Z-Wave - Wikipedia

    en.wikipedia.org/wiki/Z-Wave

    Z-Wave is a wireless communications protocol used primarily for residential and commercial building automation. It is a mesh network using low-energy radio waves to communicate from device to device, [2] allowing for wireless control of smart home devices, such as smart lights, security systems, thermostats, sensors, smart door locks, and garage door openers.

  8. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    1A7GT/DK32 – Pentagrid converter, re-engineered version of types 1A6 and 1D7-G, designed for use in portable AC/DC/Dry-cell battery radios introduced in 1938. Has 1.4 V/50 mA filament. 1B7-GT – Re-engineered version of types 1C6 and 1C7-G, designed for use in dry-cell battery radios with shortwave bands. Has 1.4 V/100 mA filament

  9. Fire alarm control panel - Wikipedia

    en.wikipedia.org/wiki/Fire_alarm_control_panel

    Coded panels were the earliest type of central fire alarm control, and were made during the 1800s to the 1970s. A coded panel is similar in many ways to a modern conventional panel (described below), except each zone was connected to its own code wheel, which, depending on the way the panel was set up, would either do sets of four rounds of code until the initiating pull station was reset ...