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  2. This easy-to-use lightbulb camera is a quick way to add ... - AOL

    www.aol.com/lifestyle/lightbuld-security-camera...

    This screw-in security camera supports 2K resolution, color night vision, motion detection, and many other useful features. Save $11 with coupon and Prime $29 at Amazon

  3. Passive infrared sensor - Wikipedia

    en.wikipedia.org/wiki/Passive_infrared_sensor

    A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.

  4. Home security - Wikipedia

    en.wikipedia.org/wiki/Home_security

    Closed-circuit, or CCTV cameras, stream through wired or wireless links. [9] These cameras stream live footage to users, allowing them to watch for suspicious activity. Current cameras feature abilities such as motion detection and two-way audio, allowing users to receive notifications of activity and speak and listen through the camera.

  5. Motion detector - Wikipedia

    en.wikipedia.org/wiki/Motion_detector

    A motion detector may be among the sensors of a burglar alarm that is used to alert the home owner or security service when it detects the motion of a possible intruder. Such a detector may also trigger a security camera to record the possible intrusion. Motion controllers are also used for video game consoles as game controllers.

  6. 6 Electronics Retirees Should Buy From Costco on Black Friday

    www.aol.com/finance/6-electronics-retirees-buy...

    This system includes four wireless outdoor cameras and two indoor plug-in cameras. You can snag this system for $199.99, which is a $200 savings off its normal price. Sonos Sound System

  7. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    A wireless system can be moved to a new property easily. An important wireless connection for security is between the control panel and the monitoring station. Wireless monitoring of the alarm system protects against a burglar cutting cables or from failures of an internet provider. This setup is commonly referred to as fully wireless.

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