4.3 Inch Serial Port Screen Overview
ET043KM8048-DC/T/C is a 4.3-inch housed serial TFT display with a resolution of 800×480, designed for medical and industrial applications. It features a TFT panel with a serial interface supporting LUA configuration, provides an active area of 96.8 × 55.5 mm within an outline dimension of 139.1 × 87.1 × 21.8 mm, delivers a typical brightness of 380 cd/m², offers wide 80° viewing angles, and supports both capacitive and resistive touch options.
Product Model
ET043KM8048-DCC01(RS232 Capacitive touch)
ET043KM8048-DCT01(RS232 Resistive touch)
ET043KM8048-DCC02(RS485 Capacitive touch)
ET043KM8048-DCT02(RS485 Resistive touch)

4.3 Inch Serial Port Screen Product Parameters
Product Series: Medical Grade
Core processor: 400M SOC processor
Operating system: No operating system, it can run after power on
Protocol type: Default Dacai configuration instruction set, the host computer can be configured to run MODBUS RTU and XGUS protocols.
Scripting language: LUA script, the screen can run logic, protocols and algorithm functions written by the user.
Size: 4.3 inches
Resolution:800x480
Installation direction: Supports 0, 90, 180 and 270 degree rotation installation display.
Storage space: 128Mbit
Font library: Built-in vector fonts, edge anti-aliasing processing, supports any size ASCII, GBK, GB2312, UNICODE (global language) font library, and can also customize any computer font display.
Image storage: Supports JPEG, PNG (semi-transparent/fully transparent) compression, and supports image storage of any size. It can store about 185 full-screen pictures in total (based on the size of 80KB/picture, BMP format is not recommended). Depending on the image compression ratio, this value will fluctuate up and down.
Color: 65K colors, 16-bit RGB
Voltage:4.5-30V
Power consumption
Sleep:0.5W
Darkest backlight, no speaker: 0.8W
The darkest backlight, with speakers: 1.9W
Brightest backlight, no speaker: 1.7W
The brightest backlight, with speakers: 2.8W
Communication method: RS232/TTL (factory default 232 level) or RS485.
Communication baud rate
RS232: 1200～921600bps, typical baud rate: 115200bps.
RS485: 1200～115200bps, typical baud rate: 9600bps.
Communication connector specifications: 2EDG3.81-6P
Local download of pictures: SD card, serial port, U disk (need to be customized)
Firmware local/remote upgrade: Insert the SD card for local upgrade/support user motherboard remote serial port upgrade screen firmware.
Remote image upgrade: Support users to remotely use their own motherboard serial port to upgrade screen-related image projects, fonts, configuration files, etc.
Real-time clock (RTC): supports clock, timer, countdown and other functions.
Screen effective display area: 96.8mmx55.5mm
Product size: 139.1x87.1x21.8mm (MAX)
Window size: 130x78.1mm
Supporting host computer software: VisualTFT®
Working temperature: -20～+70℃
Storage temperature: -30～+80℃
AV input: not supported
Audio playback: MP3 audio format (speaker 4Ω 2W, mono), shares storage space with pictures. If the sampling rate of mp3 format is 128kbps, it takes up 0.92MB/minute of storage.
Audio connector specifications: PH2.0-2P
Video playback: MP4 video format, sharing storage space with pictures. If a video file has a resolution of 800x600, a video bit rate of 3000Kbps, an audio bitrate of 166Kbps, and a frame rate of 25Hz, it will occupy 21.9MB/minute of storage.
WIFI: not supported
Conformal anti-paint process: None (optional)

LCD screen
Display type: IPS LCD screen
Backlight tube:LED
Brightness(cd/m²):380
Backlight life (h):>20,000
Contrast:800:1
Viewing angle (L/R/T/B):80/80/80/80

Core competitiveness of products
Learning cycle: 30 minutes to familiarize yourself with the development environment, 3 days to complete human-computer interaction design.
Program debugging: The host computer integrates a "virtual serial port screen," eliminating the need for hardware connection and allowing direct Keil debugging. IDE-bound debugging
Startup Time: Runs instantly upon power-up, eliminating system loading time
Configuration Controls: Features a variety of configuration controls, including multi-language controls, buttons, text, drop-down menus, progress bars, sliders, meters, animations, QR codes, curves, data loggers, circular progress bars, and sub-screen slide controls.
System Keyboard: Built-in virtual numeric and character keyboards, supporting Chinese and English input methods, and customizable keyboards.
Data Logging: Supports exporting data logger content to an SD card.
Layer Technology: Multiple display layers are built into the system for faster switching.
Multilingual Capability: Factory-preset up to 15 global languages, enabling one-click switching without the need for multiple UIs.
Logical Operation Processing: The host computer has an embedded LUA script parser, allowing users to customize complex logic relationships and protocols within the screen, meeting 99.9% of customer product requirements.
Remote Upgrade: Supports remote serial port upgrades of display firmware, project files, specified images, configuration files, and fonts.
Lifecycle: Utilizes a traditional, leading-edge processor, ensuring long-term supply.

Touch panel (Resistive and capacitive touch optional)
Touch Type: Capacitive Touchscreen
Capacitive Touch Modes: Single-touch and Slide Touch
Capacitive Touch Transmittance: Over 90%
Capacitive Touch Lifespan: Theoretically, unlimited touches are possible; touch lifespan is dependent on operating environment (dust and humidity).
Capacitive Cover Customization: Customizable "glass cover + capacitive touch" lamination service based on user drawing dimensions.
Touch type: Resistive touch screen.
Resistive screen touch mode: single point, sliding touch.
Resistive screen transmittance: more than 80%.
Resistive screen touch times: the same pixel, single touch times more than 1 million times.

Customized services
Customization Fees: For orders of 1,000 units, some customization fees may be waived.
Hardware Circuits: Customizable PCB size, circuit thickness, custom circuitry, military-grade temperature display, and more.
Software Customization: Customizable instructions or controls based on user needs, reducing development effort.
Design Services: Graphic design and product structure design services available.
Other: Customizable on demand to meet all user needs.

Installation Diagram

Step 1: As shown in the above picture, insert the serial port screen into the customer's cabinet.
Step 2: Insert the clips into the installation holes marked in red in the picture.
Step 3: Tighten the screws to fix the serial port screen to the customer's cabinet.

PRODUCTION AND MANUFACTURING
Application Areas