We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black keychain switch tester, clear housing with four MX switches and lobster clasp

YINGHUA

YINGHUA MX Switch Tester Keychain (Black)

SKU CH-ACN4-8EN0D

A compact keychain holds four MX switches — clicky Blue, tactile Brown, linear Black and linear Red — for on-the-go feel testing

  • Tests four MX switch types before you buy a full set
  • Clicky, tactile and linear feels on one keychain
  • Clear housing shows stem and spring construction
  • Lobster clasp keeps the tester on keys or bag
  • Pocket size at 2.8 cm tall and .8 cm wide

Switch Tester Keychain

This compact keychain holds four genuine MX switches so enthusiasts can feel the difference between clicky, tactile and linear stems before committing to a full board. The lobster clasp keeps it attached to a bag or keys for quick access anywhere.

Four MX Switches Included

Blue and Black switches actuate at 55g while Red and Brown switches actuate at 45g, covering the two most common weight classes. The clear housing lets you see the copper click leaf on the Blue and the smooth stem on the linear models.

Clear ABS Housing Limits

The tester is built from clear ABS plastic measuring .8 by .8 by 1.1 inches and has no LED illumination. It fits only MX-compatible stems and cannot accommodate low-profile, optical or Alps-style switches.

Highlights

  • Tests four MX switch types before you buy a full set
  • Clicky, tactile and linear feels on one keychain
  • Clear housing shows stem and spring construction
  • Lobster clasp keeps the tester on keys or bag
  • Pocket size at 2.8 cm tall and .8 cm wide

Specifications

No published specifications for this item yet.

Questions about this item

Will the MX Blue, Brown, Black and Red switches on this keychain feel the same as the ones in my full-size keyboard?

The keychain uses genuine MX Blue, Brown, Black and Red switches with copper click leafs and MX-compatible stems, so the actuation force and tactile feedback match the 45 g and 55 g ratings found on full-size boards.

How can I verify each switch is functioning correctly once I attach the keychain?

Press each stem individually; the MX Blue should produce an audible click at 55 g, the Brown a tactile bump at 45 g, while the Black and Red move linearly at 55 g and 45 g respectively.

Does the package include any extra keycaps, lubricant or tools, or is it just the keychain itself?

The box contains only the 1-key switch tester keychain with its clear ABS housing, lobster clasp and pre-installed keycap; no additional caps, lube or tools are supplied.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.