This brand new Kailh Deep Sea silent mechanical keyboard switch is something special. Kailh is a close partner and has been working on this Master iteration for some time. In the past Masters had minor quirks that needed ironing out. This may be, at present, the highest quality and most advanced silent linear switch that Kailh manufactures.
Introducing the Kailh Deep Sea Ultra-Silent Box Master V3.
Highly Limited stock
Material Upgrade
The older Linear Jellyfish Master has a slightly miss-aligned operating and reset-point, a nylon stem that can turn scratchy over time. The V2 improved on the stem but didn't align the operating and reset-point fully. V3 improves upon past experiments with even tighter tolerances. There is a fully-sealed circular white POM stem with Nylon Housing (BOX) and an overlapped operating and reset path.
Keycap Compatible LED Window
The Box Masters V2 series is still relatively new and hasn't fully hit stores yet. We didn't like the V2 as their viewing window for LEDs could jam on certain keycaps, so we declined to feature them. V3 has an improved tapered LED window to prevent keycap compatibility issues seen in previous Masters.
Sound Reduction
An improvement on the BOX Silent series, the V3 Master design mitigates both downstroke and upstroke noise. We take the same circular stem dust wall design from our popular BOX Silent switches from Kailh, upgraded the stem material, and apply enhanced sound absorption using novel TPE/Stainless Steel blends. Unlike the BOX Silent switches the stem has no integrated padding, increasing compatibility with other stems for franken-switches. Noise levels from the Kailh lab measured an exceptionally silent, ≤ 35db*.
The V3 retooling comes with even higher tolerances (including production QA). Switch quality is significantly upgraded, full copper alloy plates with composite gold contacts.
BOX Housing rated at IP54 (except terminals). The switch uses a 3-pin bottom housing to ensure high plug-and-playability.
These switches have a 100 Million Activation Life Expectancy and are IP54 - except terminals.
These switches are packed in a protective tin and include a switch puller.
Technical Details
1: Movable Plate and Pin - Copper Alloy uncoated
2: Static Plate and Pin - Copper Alloy uncoated
3: Stem - Polyoxymethylene (POM)
4: Upper Housing - High-molecular polyamide (Nylon)
5: Contact (dual contact) - Composite Gold
6: Spring - Stainless Steel
7: BOX Cover -High-molecular polyamide (Nylon)
8: Stem Contact Slider - - Polyoxymethylene (POM)
9: Bottom Housing - High-molecular polyamide (Nylon)
10: Acoustic Pad(s) - Thermoplastic Elastomers /Stainless Steel
11:Acoustic Pad(s) - Thermoplastic Elastomers /Stainless Steel
12: LED Light Guide Post - Polycarbonate (PC) - not visible
Stress Tests
Due to the high quality of material and increased design complexity, a rigorous lab testing process was instilled. Weatherization: sub-zero temperature of -20C for 48 hours. Heat-stressed at 70c for 48 hours.
Temperature Fluctuations: five repeated cycles of temperature fluctuating between 20c, -20c, 20c, 70c (1 hour each)
Humidity: 48 hours, with 90-95% relative humidity at 60c.
In the spirit of SwitchCaptain and the Deep Blue naming of this switch, the Kailh lab also sprayed the switches with salt water for 12 hours straight at 35c. No corrosion, no cracks, no exposed base plates.
For those DIYers soldering the switch, we ensured no abnormalities at soldering temperatures of 260c were present at 3-second intervals. The switch can handle 350c soldering temperature at 3-second intervals and will ensure a 95% surface area solder immersion.
*Sound Testing Specifications
Meter: BK2550-L
Background Noise: 10db Max
Mechanical Push Lever: Activate product 3 times per second for 10 seconds
Distance: 10cm max from the switch
About Kailh
Dongguan Kaihua Electronics Co., known in the selling USA as Kailh, is a manufacturer of top-of-the-line mechanical keyboard switches and is famous in particular for their box switches.
All BOX Silent Brown switches are ordered directly from Kailh, tested in the US by SwitchCaptain, and packaged in sets.
Great review here: https://www.youtube.com/watch?v=Y4tgNGfvlUM
Product code: Kailh Deep selling Sea - Silent Linear Box Master V3