Metal Keypad
KY2121 Metal Keypad With Wide 21.5mm Keycaps
KY2121 is a SUS304 stainless steel keypad built entirely from wide 21.5*15.5*1.5mm keycaps, giving every key the same generous label area.
Product Overview
KY2121 is a SUS304 stainless steel keypad built entirely from wide 21.5*15.5*1.5mm keycaps, giving every key the same generous label area. The uniform grid keeps a control panel looking ordered while still allowing long etched legends. It is a straightforward choice where all keys carry equal weight in the workflow.
- Uniform 21.5*15.5*1.5mm caps give every key the same wide label area
- A regular grid keeps operator panels visually ordered and easy to scan
- Etched key content is customized to your own command names
- SUS304 panel described as anti-riot and anti-corrosion for shared equipment
- Key strength 3N ± 10% prevents unintended actuation
- USB, PS/2 and RS232 support covers mixed installed bases
Application Scenarios
- Control room panels with equally weighted command keys
- Broadcast and studio selection panels
- Test rig function selection consoles
- Public display and wayfinding terminals
- Process machines with named step keys
Who It Is For
- Control panel and console builders
- Test equipment manufacturers
- Public terminal integrators
- OEMs standardising on a single keycap size
Problems It Solves
- Mixed keycap sizes make a panel look inconsistent
- Square keys cannot carry the full function name
- Printed legends wear away in shared use
- Light keys are pressed by accident when leaning on the panel
Technical Features
- Key size 21.5*15.5*1.5mm across the whole key field
- Key trip 0.45mm with key strength 3N ± 10%
- SUS304 brushed stainless steel panel and buttons
- Customized etched button content
- Power supply 5V±5% and working current <150mA
- USB, PS/2 and RS232 support
- Operation temperature -10℃~50℃
Specifications
| Panel material | SUS304 brushed stainless steel |
|---|---|
| Key size | 21.5*15.5*1.5mm |
| Key trip | 0.45mm |
| Key strength | 3N ± 10% |
| Power supply | 5V±5% |
| Working current | <150mA |
| Durability | >2 million |
| Interface | USB / PS/2 / RS232 |
| Compatible systems | Windows XP, 7, 8, 10, Linux, Ubuntu, Android |
| Mounting way | Rear mounting or front mounting |
| Storage temperature | -30℃~85℃ (relative humidity 20%~90%, atmospheric pressure 60~106Kpa) |
Materials
- SUS304 brushed stainless steel panel
- SUS304 brushed stainless steel wide keycaps
Manufacturing Process
- Panel punching of the uniform key grid
- Keycap forming and brushing
- Etching of the customized legends
- Switch layer assembly
- Keymap test and inspection
Quality Control
- Cap pitch and gap uniformity inspected across the grid
- Key strength sampled to 3N ± 10%
- Etched legend legibility checked
- All keys verified against the supplied keymap
Customisation Options
- Etched legends for each key position
- Number of keys and grid arrangement
- USB, PS/2 or RS232 build
- Panel outline and fixing to drawing
- Rear or front mounting
How It Compares
| Mixed key size keypad | A single 21.5*15.5*1.5mm cap size keeps the panel grid uniform and simple to document |
|---|---|
| 14*14mm key keypad | Wider caps carry full function names rather than single characters |
| Overlay membrane panel | Discrete metal keys give travel and a defined 3N ± 10% actuation force |
Use Guide
- Plan the grid size early since every key uses the same cap footprint
- Release final legend wording before etching begins
- Power from 5V±5% with under 150mA available
- Operate within -10℃~50℃
- Clean with a soft cloth along the brush direction
Questions About This Model
What size are the keys?
All keys are 21.5*15.5*1.5mm.
Can the number of keys change?
Yes, the key count and grid are set to your drawing and etched to your legends.
What is the actuation force?
3N ± 10% with 0.45mm travel.
Which systems are supported?
Windows XP, 7, 8 and 10 plus Linux, Ubuntu and Android.
How is it fixed to a panel?
Rear mounting or front mounting.
Who manufactures it?
KEYU in Shenzhen, a metal input device maker founded in 1995 offering OEM and ODM service.
Request A Quote On KY2121
Tell us quantity, interface and mounting method. Drawings and panel cutouts are welcome by WhatsApp or email.