Editing Micro Switch magnetic reed

{{infobox dswitch
| image name        = Micro Switch magnetic reed side view open.JPG
| manufacturer      = [[Micro Switch]]
| contact mechanism = Magnetic
| switch type       = Linear
| actuation force   = 
| key travel        =
| introduced        = 1966
| discontinued      = 
| keycap mount      = "Selectric-style" keycap adapter metal pin
}}

==Description==
Reed switches utilize physical and magnetic components. Two ferrous strips of metal are suspended in an inert gas using a vacuum tube-like enclosure. A magnetic field is applied to the perimeter of the tube to pull the strips together, resulting in switch actuation.

Micro Switch housings are labeled 'MICRO USA.' The switch can be opened via two small screws at the top of each unit. The red slider sits at an angle in the switch housing. The metal component of the red slider is the magnetic contact. There are markings on the side of the switch housings indicating multiple switch models. Examples include '6949 7A1HS' and '6950 7A1HS.' The first number is a production date code (year/week). The second is a keyswitch specific characteristic marking. The switch is linear, smooth, and uniform in feel; impressive if you consider its age.

Micro Switch magnetic reeds are plate mounted on metal rails. The 2 plastic pieces, which are threaded for screws, have a small lip. They hold the bottom part of the switch to the rail; the 'lid' on the switch also grabs the top of the rail. The switches are directly soldered into the PCB as whole units. The Micro Switch magnetic reeds differ from Honeywell switches -- the former have two pins and the latter possess 4. The Micro Switch may predate Honeywell variants. Micro Switch used a consistent keycap design. Using a 'stem slot' may have maintained backwards compatibility for some models.


'''Known switch variations:'''

* 7A1HA
* 7A1HS
* 7A1MS
* 7A1MT


'''The Micro Switch magnetic reed switch is made up of eleven parts:''' 

* Keyswitch box housing
* Box housing top 
* Two screws
* Two plastic female screw parts 
* Slider
* Spring
* Magnetic contact
* Contact
* Keycap mount pin

==Keyboards==
* Burroughs D8585 [https://www.flickr.com/photos/triplehaata/sets/72157644257301284]
* [[Micro Switch 800210/68]]
* Micro Switch RW-105432s [http://deskthority.net/photos-videos-f64/honeywell-micro-switch-keyboard-switch-teardown-t7570.html?hilit=micro%20switch%20magnetic%20reed]
* Mohawk Data Sciences keyboard [http://deskthority.net/photos-f62/mohawk-data-sciences-keyboard-t12471.html?hilit=micro%20switch%20magnetic%20reed]
* [[Mohawk Data Sciences Key to Tape]] keyboards

==Gallery==
<gallery widths=250px heights=187px>
File:Micro Switch magnetic reed slider with magnetic contact, spring and box housing top.JPG | Micro Switch magnetic reed slider with magnetic contact, spring, and box housing top on Burroughs D8585
File:Micro Switch magnetic reed parts.jpg                                                    | Micro Switch magnetic reed parts on Micro Switch RW-10543
File:Micro Switch magnetic side view 2.jpg                                                   | Micro Switch magnetic side view on Micro Switch RW-10543
File:Micro Switch magnetic reed top view.jpg                                                 | Micro Switch magnetic reed top view on Micro Switch RW-10543
File:Micro Switch magnetic reed assembled.JPG                                                | Micro Switch magnetic reed assembled side view on Micro Switch 800210/68
File:Micro Switch magnetic reed assembled top view.JPG                                       | Micro Switch magnetic reed assembled top view on Micro Switch 800210/68
File:Micro Switch magnetic reed grey side view open.jpg                                      | Micro Switch magnetic reed grey side view open on Burroughs D8585
File:Micro Switch magnetic reed grey top view open.JPG                                       | Micro Switch magnetic reed grey top view open on Burroughs D8585
File:Micro Switch magnetic reed grey box housing open.JPG                                    | Micro Switch magnetic reed grey box housing open on Burroughs D8585
File:Micro Switch magnetic reed grey parts.JPG                                               | Micro Switch magnetic reed grey parts on Burroughs D8585
</gallery>

==External links==
*Deskthority — [http://deskthority.net/photos-videos-f8/honeywell-micro-switch-keyboard-switch-teardown-t7570.html Honeywell Micro Switch Keyboard+Switch Teardown]
*Deskthority — [http://deskthority.net/photos-f62/mohawk-data-sciences-keyboard-t12471.html?hilit=Mohawk Mohawk Data Sciences Keyboard]

[[Category:Linear switches]]
[[Category:Reed switches]]
[[Category:Honeywell switches]]
[[Category:Micro Switch switches]]
[[Category:List of all keyboard switches]]