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2. Electric gate - Wikipedia

   en.wikipedia.org/wiki/Electric_gate

   A sliding electric gate with electric motor and backup battery in case of mains failure. Note also the Infrared obstacle sensor located on the wall to prevent the gate from closing while a vehicle or other obstacle is in the way. Driveway gate openers can be the rollback (sliding) type that retracks a gate along the fence or wall on wheels or ...

3. Garage door opener - Wikipedia

   en.wikipedia.org/wiki/Garage_door_opener

   The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.

4. Chamberlain Group - Wikipedia

   en.wikipedia.org/wiki/Chamberlain_Group

   Chamberlain Group (CGI), the corporate parent company to LiftMaster, Chamberlain, Merlin, and Grifco, designs and engineers residential garage door openers, commercial door operators, security cameras, and gate entry systems. CGI is also the parent company to Controlled Products Systems Group, the largest wholesale distributor of perimeter ...

5. Garage door - Wikipedia

   en.wikipedia.org/wiki/Garage_door

   Garage Door Hardware. A garage door is a large door to allow egress for a garage that opens either manually or by an electric motor (a garage door opener). Garage doors are frequently large enough to accommodate automobiles and other vehicles. The operating mechanism is usually spring-loaded or counterbalanced to offset the door's weight and ...

6. Automatic door - Wikipedia

   en.wikipedia.org/wiki/Automatic_door

   The automatic door used a mat actuator. In 1960, they co-founded Horton Automatics Inc and placed the first commercial automatic sliding door on the market. [5] With the invention of the Gunn diode, microwave motion detectors became common in automatic doors in the 1970s. [6] [7] In 1980, the first automatic door using an infrared sensor was ...

7. AOL Mail

   mail.aol.com

   You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

8. Mechanical, electrical, and plumbing - Wikipedia

   en.wikipedia.org/wiki/Mechanical,_electrical...

   Mechanical, Electrical, and Plumbing (MEP) refers to the installation of services which provide a functional and comfortable space for the building occupants. In residential and commercial buildings, these elements are often designed by specialized MEP engineers. MEP's design is important for planning, decision-making, accurate documentation ...

9. Electronic toll collection - Wikipedia

   en.wikipedia.org/wiki/Electronic_toll_collection

   Electronic toll collection (ETC) is a wireless system to automatically collect the usage fee or toll charged to vehicles using toll roads, HOV lanes, toll bridges, and toll tunnels. [1] It is a faster alternative which is replacing toll booths, where vehicles must stop and the driver manually pays the toll with cash or a card.