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SimpliSafe was founded in 2006 by then-Harvard Business School students, Chad and Eleanor Laurans after several friends in the Cambridge area experienced home break-ins, but couldn't find a security company that was designed to help renters.
A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary ( theft ) or property damage , as well as against intruders.
The Nest Protect is available in both black and white (the black is exclusively sold through Nest directly [59]) and also comes in battery or AC-powered models. The Nest Protect features a multicolored light ring which is color-coded to indicate different operations, such as yellow to indicate an early warning or red if an alarm is sounding.
Keycard systems operate by physically moving detainers in the locking mechanism with the insertion of the card, by shining LEDs through a pattern of holes in the card and detecting the result, by swiping or inserting a magnetic stripe card, or in the case of RFID or NFC cards, merely being brought into close proximity to a sensor.
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The Enforcer is a 16 kg hardened steel construction with a steel pad at the impact end so that it can absorb the impact, [2] and a handle at the opposite end angled so that the user can swing accurately at inward-opening doors without actually applying their own pressure more than necessary. [2]
Protecting The Nation From Foreign Terrorist Entry Into The United States. Restricts entry to the U.S. for passport holders from seven Muslim-majority countries and halts entry for refugees for 120 days. Read Order Read article ; January 25, 2017 Border Security And Immigration Enforcement Improvements
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 January 2025. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...