Numeric Keypad With LCD
Metal Keyboard With LCD Display KY-3688LP-H
KY-3688LP-H is a front panel mounted keypad with 16 buttons and a 128*32 dot matrix LCD display in yellow-green backlight.
Product Overview
KY-3688LP-H is a front panel mounted keypad with 16 buttons and a 128*32 dot matrix LCD display in yellow-green backlight. Its low-power design means it can be applied in battery-powered scenarios such as lockers and remote terminals. Characters are etched and filled so they resist wear and peeling, and Braille layout is available.
- Low-power design allows battery-powered scenarios where mains supply is not available
- 128*32 dot matrix LCD shows prompts next to the 16 key entry field
- Etching and filling process on key characters resists wear and peeling
- Customizable Braille layout supports visually impaired users at public lockers
- SUS304 brushed stainless steel panel is explosion-proof and corrosion-resistant
- RS485 interface suits long cable runs inside cabinet banks
Application Scenarios
- Lockers and express delivery lockers
- Bank self-service deposit and withdrawal equipment
- Self-service bill printing and inquiry machines
- Public information inquiry equipment and automated monitoring
- Mine safety inspection and coal mining equipment
- Fixed offshore platforms and military control consoles
Who It Is For
- Express locker and cabinet manufacturers
- Banking self-service equipment builders
- Public information terminal suppliers
- Industrial control platform integrators
Problems It Solves
- Battery-powered lockers cannot run a power-hungry panel, met by the low-power design
- Operators need prompts as well as keys, supplied by the 128*32 dot matrix LCD
- Painted legends peel outdoors, avoided by the etching and filling process
- Multi-language markets are supported as the LCD can show English, German, Romanian, Czech or other languages
Technical Features
- 16 buttons with an embedded front panel mounted body
- 128*32 dot matrix LCD display with yellow-green backlight
- SUS304 brushed stainless steel panel and buttons
- Characters padded with preservatives on the brushed steel buttons
- Interface RS485, with TTL, RS485 and other interfaces customizable
- Customizable Braille layout
Specifications
| Model | KY-3688LP-H |
|---|---|
| Buttons | 16 |
| Display | 128*32 dot matrix LCD |
| Backlight | Yellow-green |
| Interface | RS485 |
| Mounting | Front panel mounted |
| Panel material | SUS304 brushed stainless steel |
| Power design | Low-power |
Materials
- SUS304 brushed stainless steel panel
- SUS304 brushed stainless steel buttons
Manufacturing Process
- Sheet metal forming of the SUS304 brushed panel
- CNC machining of the LCD window and mounting features
- Etching and filling of key characters for wear resistance
- Braille dot forming where specified
- LCD module fitting, front panel assembly and RS485 test
Quality Control
- LCD pixel and backlight inspection on the 128*32 display
- Character etch fill adhesion test
- RS485 communication verification
- Current draw check against the low-power design target
Customisation Options
- Silkscreen or etched key content in different languages
- Braille layout on selected keys
- Interfaces such as TTL or RS485 variants
- LCD display language confirmed before order
How It Compares
| Keypads without a display | A 128*32 dot matrix LCD shows prompts so the host does not need a second screen |
|---|---|
| Mains powered panels | The low-power design makes battery-powered locker scenarios practical |
| Silk screened keypads | Etched and filled characters resist wear and peeling in outdoor public use |
Use Guide
- Mount the unit from the front panel side into the cabinet face
- Connect the RS485 line to the controller, or order a TTL variant
- Confirm the LCD display language before placing the order
- Specify Braille key positions during layout customization
Related Products
Questions About This Model
What display is fitted?
A 128*32 dot matrix LCD with yellow-green backlight.
How many buttons are there?
16 buttons.
Which interface does it use?
RS485, with TTL and other interfaces customizable.
Can it run on batteries?
It uses a low-power design, so battery-powered scenarios can be applied.
Which languages can the LCD show?
English, German, Romanian, Czech or other languages, confirmed before placing the order.
Is Braille available?
Yes, the Braille layout is customizable.
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