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The standard details requirements for a range of alarm systems including central station burglar alarms, police station connected alarms, local alarms, proprietary systems, holdup alarms, and digital alarm communicator system units. It also covers power supplies essential for burglar-alarm equipment operation.
An early version of a car alarm for use as a theft deterrent was invented by an unknown prisoner from Denver in 1913. [1] This version was manually armed, and triggered when someone tried to crank the engine. A later alarm inspired by an early version of a remote starter was published in 1916. [2]
Koh purchased the subsidiary for $1 million, establishing the new company as Ademco (Far East) Pte Ltd. [6] [1] Koh set up a private alarm monitoring station enterprise for client facilities in Singapore. [6] In the 1980s, the company installed alarms in elevators for the Housing and Development Board (HDB) to deter local crime
UL 1076, Proprietary Burglar Alarm Units and Systems (DOD Approved: April 09, 1992, ANSI Approved: February 16, 2021) [40] [41] UL 1481, Standard for Power Supplies for Fire-Protective Signaling Systems [42] UL 1610, Central-Station Burglar-Alarm Units [43] UL 1635, Standard for Digital Alarm Communicator System Units (ANSI Approved: April 13 ...
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A remote starter is a radio controlled device, which is installed in a vehicle by the factory or an aftermarket installer to preheat or cool the vehicle before the owner gets into it. [1] Once activated, by pushing a button on a special key chain remote, it starts the vehicle automatically for a predetermined time.
In 1999, Keith Nellesen and Todd Pedersen co-founded APX Alarm Security Solutions in Provo, Utah. [4] [5] At the time, the company sold and installed security systems. [4] APX Alarm Security Solutions rebranded as Vivint in February 2011. [4] [6] Vivint was acquired by The Blackstone Group in November 2012. [7]
Experts explain whether ice or heat for back pain will lead to better relief, and the best time to use each.