What a Hall effect keyboard is

As an Amazon Associate I earn from qualifying purchases. I earn a small commission from Amazon links, at no cost to you. See disclosure.

A Hall effect keyboard has a magnet on the stem of each key and a sensor that reads how far that magnet has moved. The name is the physics. Edwin Hall showed in 1879 that a magnet pushes a current sideways in a thin conductor, and the sensor in the keyboard measures a small version of that push. As the magnet comes closer, the reading changes. The board knows the position of the key, not only whether two metal pieces have touched.

I play left-handed on UHJK. For full picks, see the best gaming keyboards. Layout and feel come first. A Hall effect sensor is an extra: it’s what lets a keyboard offer an actuation depth you choose, but it’s not a reason to replace a board whose press you already trust. More keyboard guides.

Whether this listing has the sensor

A normal mechanical switch closes two metal contacts at one depth. That depth is built into the switch. Pressing harder does not move it, and no app can move it. A Hall effect switch never needs those contacts to meet. The firmware watches the sensor and decides which reading counts as on. That decision can be changed, which is the whole practical difference.

Why are you looking at a magnetic board?

I reverse keys in a shooterI hit some keys by accidentI mostly typeThe page only says fast

The listing has to say Hall effect or magnetic, and it has to say rapid trigger. Turn that on for the keys you reverse. Leave the other settings alone for a few sessions.

Boards worth a look

• Adjustable Hall / analog 60%: assembled Wooting 60HE. Check the Wooting shop for the current price. Wooting’s 60HE / 60HE+ pages list adjustable actuation from 0.1 mm to 4.0 mm in 0.1 mm steps, plus Rapid Trigger as a separate feature. The current 60HE+ family uses Lekker L60 switches. Confirm which generation the listing is. Wooting 60HE+. What are Hall Effect keyboard switches. Amazon search for Wooting 60HE
• Hall-effect TKL with Rapid Trigger: Corsair K70 PRO TKL, SKU CH-911911G-NA. Official US price $169.99 on Corsair. Official: MGX Hyperdrive Hall-effect switches, Rapid Trigger, per-key actuation 0.1 mm to 4.0 mm in 0.1 mm steps, 150 million keystroke rating, wired. Corsair K70 PRO TKL. Hall Effect keyboards explained. Amazon search for K70 PRO TKL Hall Effect
• Fixed mechanical point, not this sensor: Logitech G PRO X TKL LIGHTSPEED. Official support sheet: LIGHTSPEED, USB report rate max 1 ms, GX switches. Official US price $189.99 on Logitech G. The actuation point is the GX switch you put in, not a slider. Logitech support spec. Amazon search for PRO X TKL LIGHTSPEED

The short version: the listing has to say Hall effect or magnetic, and it has to name the setting you came for.

What the reading lets you change

Because the board can see the key the whole way down, three settings become possible. They are not included just because the magnet is there. Each one has to be named.

The actuation point is how far the key travels before it counts. On this sensor you can move that line, inside the range that board offers. Wooting prints 0.1 mm to 4.0 mm. Corsair’s MGX pages print the same pair, default 2.0 mm, and tell you the recommended band is tighter (0.4 mm to 3.6 mm on the MGX explainer) because the ends of the travel are noisier. Start in the middle. A shallower line counts sooner. A deeper line waits. The spring still decides how hard the key feels. Grams on the spec list are the spring. Millimeters, when the page prints them, are the distance. A missing millimeter means the page is incomplete, not that the sensor is worse.

Per-key actuation is the extra slider competitor pages mention and a lot of concept posts skip. Movement keys can sit shallower than the rest. On a right-handed desk that is often WASD. Lefties on UHJK can make those four keys shallower instead. Chat, modifiers, and a key you rest on can stay deeper so a palm does not type. A global slider that moves every key at once is still adjustable actuation. It is not per-key.

Rapid trigger uses the same reading a different way. The key turns off once you start to lift, and turns on once you start back down, after a short distance you set. You do not have to rise to a fixed point near the top. Wooting’s Rapid Trigger help page is the official sentence for that follow-the-finger reset. Corsair’s Hall-effect explainer says the same thing in different words. Hall effect without those words is the sensor only. The setting is a second line on the listing, and it lives in that board’s software. Typing, and a key you only hold down, do not use the reset.

Analog is a third use of the same position, and it is the one most listings skip. Wooting’s analog-input note treats a light press and a full press as different amounts, the way a trigger pulled partway is not the same as a trigger pulled fully. If the page never says analog, the sensor is only choosing on and off. Do not assume a magnet gives you a joystick.

The key types with no app installed. The factory depth is already a keyboard. The app is where you move that depth, turn rapid trigger on, or assign a range. A board you will never plug into its software is a magnet you are not using.

The physics, from the maker pages

Corsair’s Hall Effect keyboards explained page, updated 30 June 2026, is the consumer version of the same picture. A magnet in the stem. A sensor on the PCB. A voltage that changes with depth. Texas Instruments’ keyboard note, Position Sensing in Keyboard Applications (SLYA093, September 2025), is the parts-maker version. Mechanical switches rely on physical contact and give you on or off. A Hall sensor reads the field instead. TI’s point is configurability and a longer life because the signal does not need two leaves to meet.

Corsair’s explainer also names the pause a metal contact takes. When two leaves meet they bounce, so a normal board waits a moment until the contact looks steady. That wait is debounce. A Hall key has no leaf to bounce, so that particular pause is not there. The magnet still does not move the actuation point for you. The software does.

Wooting’s own Hall-effect post is the analog argument. The sensor can return a position across the whole travel, not a single click. Their Lekker L60 V2 page calls the switch contactless Hall effect, linear over 4 mm, and says those stems are for Hall-effect boards, not a standard mechanical socket.

What the words on the box are worth

Hall effect and magnetic are the same sentence on a keyboard page. Makers use one or the other. Corsair’s MGX pages use both for the same switch. Either word means the magnet and the position sensor. Neither word means a brand, and the same company can sell a normal contact switch beside it. Corsair still sells MLX mechanical switches on other boards.

Optical is a different part. The stem interrupts a beam of light, and the board notices the beam. That is still one switch per key, and it can be a fine keyboard. It is not a magnet, and a broken beam is usually still a single on and off. Their older Flaretech boards were optical analog, and their Rapid Trigger help page says those boards can run a limited version of the setting. A page that only says optical, speed, or fast has not said Hall effect.

The feel words stay in force. Linear, tactile, and clicky describe the press. A magnet often rides in a smooth stem, so the listing says linear. Corsair’s MGX explainer and Wooting’s Lekker page both call those switches linear. If you want a bump, the page has to say tactile. The magnet will not add one.

A socket sold for an ordinary mechanical switch does not accept this stem unless the listing says the two fit. Hot-swap is a socket. It is not the sensor. Pulling a keycap and seeing a stem only tells you there is a switch. The spec line is what tells you a magnet is under it.

The same phrase shows up on controllers, where a Hall effect stick uses a magnet so the stick is not riding a contact that wears. That is a thumbstick, not this keyboard. A keyboard page that borrows the controller sentence and never says the keys are magnetic has not sold you the sensor.

Extra lines the competitor pages keep asking about

Because the sensor sees the whole travel, some boards sell a second action on the same key. Wooting calls that Dynamic Keystroke. Corsair’s explainer calls it Multi Action, up to four points on one press. Walk on a half press and sprint on a full press is their example, not mine. I move on UHJK.

Wooting also names Rappy Snappy and Snappy Tappy (SOCD) on the 60HE+ page. Those are official feature names on that board. They are not Hall effect itself. They are extra logic that uses the same position.

Corsair’s Hall-effect page also names Smart Tap and Tap Lock. Tap versus hold, and a toggle that stays on. Again, software. The magnet only supplied the position.

What the sensor leaves alone

It does not pick the layout. A full-size board and a 60% board can both carry the magnet, and either one can be a normal contact switch. UHJK still exists on a TKL and on a 60%. A 60% drops the F-row, which I care about more in WoW than in Overwatch. The Naga Left-Handed already holds consumables. I would not buy a 60HE as the only WoW board without that grid. It does not decide how many keys can be held at once. It does not choose the cable, the dongle, or the lights.

It also does not raise how often the board talks to the PC. A listing can report at 1000 Hz with ordinary contacts, and a magnetic board can fail to say what its own rate is. How soon a press reaches the game is a separate line from how the press was measured. Read that delay on its own if it is why you are shopping.

A cycle count in the tens of millions is the maker’s lab figure for a switch that does not depend on two leaves touching. Corsair prints 150 million on MGX Hyperdrive. Wooting’s older Lekker write-up printed 100 million. It is not a measurement of the board in your hands, and it is not a reason to replace a contact switch that still feels right. The wear difference you can actually check is simple. The signal does not require the metal to meet.

How to decide

Buy it when you will use the position. That means you want a depth you can move, or rapid trigger for keys you tap and reverse, or analog in a game that accepts it. The listing has to say Hall effect or magnetic, and it has to name the setting. One of those lines without the other is a different product.

Skip it when the keyboard you have already feels right and you will not open an app to move a slider. A contact switch that actuates where your fingers already press is the same match. The PRO X TKL is that case. You can swap GX switches. You cannot slide them to 0.5 mm. The magnet is worth the money on the day you change a distance and notice. Until that day, it is a spec you can leave on the page.

Buy the magnet when you will open the software and move a distance. Otherwise keep the press you already trust. More keyboard guides.

Common questions

What is a Hall effect keyboard?

It's a keyboard that uses a magnet and a sensor under each key to measure exactly how far the key is pressed. Because there are no metal contacts, you can choose the point where a keypress counts in the software.

Is a magnetic keyboard the same as Hall effect?

Yes. On keyboard listings, 'magnetic' and 'Hall effect' describe the same sensor. Corsair, for example, uses both names for its MGX switches.

Is Hall effect the same as rapid trigger?

No. Hall effect is the sensor, and rapid trigger is a feature it enables: the key resets the moment you start lifting and fires again as soon as you press down. Check that the listing mentions rapid trigger if you want it.

Are optical switches the same as Hall effect switches?

No. Optical switches use a light beam, while Hall effect switches use a magnet and sensor. Most optical switches don't let you adjust the actuation point.

Do I need a Hall effect keyboard for gaming?

No. A regular mechanical keyboard works great. A Hall effect board is worth it if you want adjustable actuation, rapid trigger or analog input and you'll actually set them up in the software.

Do Hall effect keyboards make you faster?

Slightly. Rapid trigger and a shorter actuation point let keys register and reset sooner, which helps with quick strafing in shooters. It won't change your polling rate or how the switches feel.

Are Hall effect switches more durable than mechanical switches?

Usually yes. With no metal contacts to wear out, makers rate them very high; Corsair lists 150 million keystrokes for MGX Hyperdrive switches.

Can I put Hall effect switches in a regular mechanical keyboard?

No. Hall effect switches need a keyboard with magnetic sensors, and Wooting states its Lekker switches won't work in a standard mechanical board. Hot-swap sockets alone aren't enough.

What is analog input on a Hall effect keyboard?

It means the keyboard reports how far you press a key, not just on or off, like a controller stick. A light press can make you walk and a full press can make you run in games that support it.