Metal Keypad
KY2145B Stainless Steel Digital Keypad With RS232 Support
KY2145B is a brushed stainless steel digital keypad whose interface options include RS232 alongside USB and PS/2, which matters when the host is a controller rather than a PC.
Product Overview
KY2145B is a brushed stainless steel digital keypad whose interface options include RS232 alongside USB and PS/2, which matters when the host is a controller rather than a PC. The 3N ± 10% key force is deliberately heavy to prevent accidental entries on a public terminal. Its operating ceiling of 50℃ is higher than most panels in the range.
- Supports USB / PS/2/ RS232, so it connects to controllers as well as PCs
- 3N ± 10% key strength resists accidental presses on busy public panels
- Operation temperature up to 50℃ suits enclosures that run warm inside
- SUS304 brushed stainless steel panel is anti-riot and anti-corrosion
- Etched key content is made to customer requirements rather than a stock set
- Net weight 0.25Kg keeps fascia loading low
Application Scenarios
- Embedded code entry on self-service equipment
- Controller-driven machines using an RS232 host link
- Access panels in warm equipment enclosures
- Unattended payment and selection terminals
- Industrial machine operator inputs
Who It Is For
- Machine builders with serial-only controllers
- Self-service equipment manufacturers
- Access control system integrators
- Panel designers replacing plastic numeric keypads
Problems It Solves
- Keypads that only speak USB when the host controller needs RS232
- Light-touch keypads that register unintended presses in public
- Heat build-up inside sealed enclosures exceeding a keypad rating
- Legends worn off printed keycaps
Technical Features
- SUS304 brushed stainless steel panel, anti-riot and anti-corrosion
- SUS304 brushed stainless steel buttons with etched content
- Interface support for USB / PS/2/ RS232
- Key size 18*23.5*5/18*39*5mm with Key Trip 0.45mm
- Key strength 3N ± 10%
- Power supply 5V±5% with working current <150mA
- Operation Temperature -10℃~50℃ and Storage Temperature -30℃~85℃
Specifications
| Panel Material | SUS304 brushed stainless steel |
|---|---|
| Power supply | 5V±5% |
| Working current | <150mA |
| Durability | >2 million |
| Interface | USB / PS/2/ RS232 |
| Key size | 18*23.5*5/18*39*5mm |
| Key Trip | 0.45mm |
| Key strength | 3N ± 10% |
| Mounting Way | Rear mounting or Front mounting |
| Net weight | 0.25Kg |
| Gross weight | 0.3Kg |
| Operation Temperature | -10℃~50℃ |
Materials
- SUS304 brushed stainless steel panel
- SUS304 brushed stainless steel buttons
Manufacturing Process
- Sheet metal blanking of the keypad panel
- CNC machining of the 18*23.5 and 18*39 key apertures
- Brushing of the SUS304 surface
- Silk screen or etching of the key content
- Interface board assembly for USB, PS/2 and RS232
Quality Control
- Key strength sampling against 3N ± 10%
- Key trip verification at 0.45mm
- Protocol test on each of the USB, PS/2 and RS232 outputs
- Weight check at 0.25Kg net
Customisation Options
- Button silk screen or etching content to customer requirements
- Interface built for USB, PS/2 or RS232
- Key layout and count
- Rear or front mounting hardware
- Panel outline matched to the host cutout
How It Compares
| USB only metal keypad | RS232 support connects directly to a serial controller without an added converter |
|---|---|
| Light-touch numeric keypad | A 3N ± 10% key strength makes accidental entry far less likely on an exposed public panel |
Use Guide
- Confirm which of USB, PS/2 or RS232 the host expects before ordering
- Supply key artwork for etching at order stage
- Choose rear or front mounting to suit the fascia
- Keep the enclosure interior within -10℃~50℃
Questions About This Model
Does KY2145B support serial?
Yes, the product interface supports USB / PS/2/ RS232.
How firm are the keys?
Key strength is 3N ± 10% with a 0.45mm key trip.
What is the key size?
18*23.5*5mm and 18*39*5mm.
What is the operating temperature?
-10℃~50℃ with 20%~85% relative humidity.
What does it weigh?
0.25Kg net and 0.3Kg gross.
Can the key legends be changed?
Yes, button silk screen or etching content is customized to customer requirements.
Request A Quote On KY2145B
Tell us quantity, interface and mounting method. Drawings and panel cutouts are welcome by WhatsApp or email.