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2. Sliding door operator - Wikipedia

   en.wikipedia.org/wiki/Sliding_door_operator

   A door operator may be triggered in various ways: Approach Sensor (such as a radar sensor) - the door opens when a user approaches it. Pushbutton - the door opens when a user presses a button. Access control - the door opens when an access control system determines the user is authorized to go through. Automatically (in the case of elevators).

3. Swing-door operator - Wikipedia

   en.wikipedia.org/wiki/Swing-door_operator

   Shades of blue: standard door closer. Shades of red: opener gears. Gold: motor. Operators use various internal technologies. Some are built on top of a standard door closer. To open the door, the operator forces the closer in the opening direction. Then, the closer closes the door. The user may open the door manually, using just the door closer.

4. Automatic door - Wikipedia

   en.wikipedia.org/wiki/Automatic_door

   An automatic door, also known as an auto door, is a door that opens automatically, without the need for human intervention or usually upon sensing the approach of a person. A person can be detected by microwave pulses, infrared sensors , or pressure-sensing pads.

5. Top 7 home renovations that can increase your property's ...

   www.aol.com/finance/best-home-renovations...

   Installing an automatic garage door opener with a keypad can also improve convenience and accessibility for you and your family. 2. Entry door replacement: Steel. 💰 Quick facts Average cost: $2,355

6. Crash bar - Wikipedia

   en.wikipedia.org/wiki/Crash_bar

   Depressing the bar unlatches the door, allowing occupants to quickly leave the building. [3] Modern fire standards often mandate that doors be fitted with crash bars in commercial and other occupancies where mass evacuation may be slowed by other types of door openers. They are sometimes intended solely for emergency use and may be fitted with ...

7. Remote keyless system - Wikipedia

   en.wikipedia.org/wiki/Remote_keyless_system

   Premium models, such as SUVs and estates with tailgates, may have a motorized assist that can both open and close the tailgate for easy access and remote operation. For offices, or residences, the system can also be coupled with the security system, garage door opener or remotely activated lighting devices.