Metal Keypad
KY2078A 20 Key Metal Keypad With 18 Pin Output
KY2078A is an embedded keypad with 20 buttons on a SUS304 brushed stainless steel panel, terminating in a 2.54mm pitch 18 pin connector rather than a USB cable.
Product Overview
KY2078A is an embedded keypad with 20 buttons on a SUS304 brushed stainless steel panel, terminating in a 2.54mm pitch 18 pin connector rather than a USB cable. That output suits board level integration where the keypad matrix is read directly by your own controller. At 0.25KG net weight it fits compact financial, communication and military terminals.
- A 2.54mm 18 pin interface lets your own controller scan the matrix without a USB stack
- 20 buttons cover a numeric block plus function keys in a small panel
- 0.25KG net weight keeps the load light on thin fascia panels
- SUS304 brushed stainless steel resists prying and corrosion
- Rear or front mounting suits both new designs and retrofits
Application Scenarios
- Board level integration into a custom terminal controller
- Financial equipment with an in-house keypad scanner
- Communication equipment panels
- Military equipment terminals
- Self service terminal equipment with limited internal space
Who It Is For
- Electronics engineers designing their own keypad scanning circuit
- Terminal OEMs integrating a keypad onto a mainboard
- Equipment builders replacing a plastic matrix keypad
Problems It Solves
- A USB keypad adds an unnecessary protocol layer when the host scans a matrix directly
- Plastic matrix keypads fail on public terminals
- Heavy keypads strain thin fascia panels
- Legend requirements vary by customer and market
Technical Features
- 20 buttons in SUS304 brushed stainless steel
- Product interface of 2.54—18Pin
- Power supply 5V±5% with working current under 150mA
- Key size 20*12.5*2mm with 0.45mm key trip and 3N ± 10% key strength
- Durability greater than 2 million operations
- Net weight 0.25KG and gross weight 0.3KG
- Rear mounting or front mounting
Specifications
| Buttons | 20 |
|---|---|
| Power Supply | 5V±5% |
| Working Current | <150mA |
| Durability | >2 million |
| Interface | 2.54—18Pin |
| Key Size | 20*12.5*2mm |
| Key Trip | 0.45mm |
| Key Strength | 3N ± 10% |
| Net Weight | 0.25KG |
| Gross Weight | 0.3KG |
| Mounting Way | Rear mounting or Front mounting |
Materials
- SUS304 brushed stainless steel panel
- SUS304 brushed stainless steel buttons
Manufacturing Process
- Brushing of the SUS304 panel surface
- CNC machining of the 20 key openings
- Etching of button content per customer artwork
- Matrix contact layer assembly
- 18 pin header termination and continuity test
Quality Control
- Continuity check on every pin of the 18 pin output
- Key strength sampling against 3N ± 10%
- Key trip verification at 0.45mm
- Weight check against the 0.25KG net figure
- Full matrix function test
Customisation Options
- Button silk screen or etching content to customer requirement
- Layout arranged across the 20 key field
- Panel outline and fixing centres to your drawing
- Pin assignment of the 18 pin connector
- Front or rear mounting arrangement
How It Compares
| USB keypads | The 2.54—18Pin output connects directly to your own scanning circuit |
|---|---|
| Plastic matrix keypads | SUS304 brushed stainless steel survives prying and corrosive air |
| Heavier metal keypads | Net weight of 0.25KG suits thin fascia panels |
Use Guide
- Confirm the 18 pin matrix mapping with the factory before board layout
- Provide 5V±5% and allow for current under 150mA
- Choose front or rear mounting to suit your cutout
- Support the 2.54mm header so the connector is not stressed by the cable
- Send etching artwork with the purchase order
Questions About This Model
How many buttons does KY2078A have?
A total of 20 buttons.
What is the interface?
A 2.54—18Pin connector.
What is the key size?
20*12.5*2mm with a 0.45mm key trip.
How heavy is the keypad?
Net weight 0.25KG and gross weight 0.3KG.
What is the panel material?
SUS304 brushed stainless steel, anti-riot and anti-corrosion.
Can it be front mounted?
Yes, rear mounting and front mounting are both available.
Request A Quote On KY2078A
Tell us quantity, interface and mounting method. Drawings and panel cutouts are welcome by WhatsApp or email.