{"product_id":"4-inch-circular-ui-serial-screen-720x720-configuration-lua-script-serial-tft-display-with-capacitive-touch-for-medical","title":"4 Inch Circular UI Serial Screen 720x720 Configuration LUA Script Serial TFT Display With Capacitive Touch For Medical","description":"\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cimg class=\"alignnone size-full wp-image-30394\" src=\"https:\/\/www.youritech.com\/uploads\/2025\/10\/%E4%B8%B2%E5%8F%A3%E8%AF%A6%E6%83%85%E9%A1%B5_01-2.jpg\" alt=\"\" width=\"930\" height=\"354\"\u003e\u003cbr\u003e4 Inch Serial Port Screen \u003cspan class=\"magic-8\"\u003e\u003cspan class=\"magic-9\"\u003eOverview\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"magic-8\"\u003e\u003cspan class=\"magic-9\"\u003eThe ET040DH7272-DC is a 4-inch diagonal circular UART TFT display with a resolution of 720×720. It features a serial interface, TFT display mode, and a 101.5 mm active area within an outline of 123.0×12.0 mm. The display offers 500 cd\/m² brightness, 80° viewing angles in all directions, supports capacitive touch, and operates from –20 °C to 70 °C.\u003cbr\u003e\u003cimg class=\"alignnone size-full wp-image-30777\" src=\"https:\/\/www.youritech.com\/uploads\/2025\/10\/ET040DH7272-DC_01.jpg\" alt=\"\" width=\"930\" height=\"329\"\u003e \u003cimg class=\"alignnone size-medium wp-image-30778\" src=\"https:\/\/www.youritech.com\/uploads\/2025\/10\/ET040DH7272-DC_02.jpg\" alt=\"\" width=\"930\" height=\"451\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"magic-8\" style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan class=\"magic-9\"\u003e\u003cstrong\u003e4 Inch Serial Port Screen Product Parameters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eCore processor\u003c\/strong\u003e: 600M SOC processor.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eOperating system\u003c\/strong\u003e: No operating system, it can run after power on, startup time: about 1 second.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eProtocol type\u003c\/strong\u003e: Default Dacai configuration instruction set, the host computer can be configured to run MODBUSRTU and XGUS protocols.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eScripting language\u003c\/strong\u003e: Version 5.3 LUA script, the screen can run logic, protocols and algorithm functions written by the user.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eSize\u003c\/strong\u003e: 4.0 inches\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e:720x720\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eInstallation direction\u003c\/strong\u003e: Supports 0, 90, 180 and 270 degree rotation installation display.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eStorage space\u003c\/strong\u003e: 128Mbit\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eFont library:\u003c\/strong\u003e 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.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eImage storage\u003c\/strong\u003e: Supports JPEG, PNG (semi-transparent\/fully transparent) compression, and supports image storage of any size. It can store approximately 87 full-screen pictures in total (based on the size of 169KB\/picture, BMP format is not recommended). Depending on the picture compression ratio, this value will fluctuate up and down.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e: 65K colors, 16-bit RGB\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e:5-28V\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003ePower consumption\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eDarkest backlight, no speaker\u003c\/strong\u003e: 0.8W;\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eThe darkest backlight and speakers:\u003c\/strong\u003e 2.4W;\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eBrightest backlight, no speaker\u003c\/strong\u003e: 2.3W;\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eThe brightest backlight and speakers\u003c\/strong\u003e: 4.8W.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eCommunication method\u003c\/strong\u003e: RS232\/TTL (factory default 232 level, short J5 for TTL level).\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eCommunication baud rate\u003c\/strong\u003e: 1200~921600bps, typical baud rate: 115200bps.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eCommunication connector specifications\u003c\/strong\u003e: FPC1.0-10P\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eLocal download of pictures:\u003c\/strong\u003e SD card, serial port, U disk\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eFirmware local\/remote upgrade\u003c\/strong\u003e: Insert SD card\/U disk for local upgrade\/support user motherboard remote serial port upgrade screen firmware.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eU disk connector specifications\u003c\/strong\u003e: PH2.0-4P vertical.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eRemote image upgrade\u003c\/strong\u003e: Support users to remotely use their own motherboard serial port to upgrade screen-related image projects, fonts, configuration files, etc.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eReal-time clock\u003c\/strong\u003e: supports clock, timer, countdown and other functions.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eScreen effective display area\u003c\/strong\u003e: φ101.5mm\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eProduct size\u003c\/strong\u003e: φ123.0mmx12.0mm\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eSupporting host computer software\u003c\/strong\u003e: VisualTFT®\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eAudio playback\u003c\/strong\u003e: 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.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eAudio connector specifications\u003c\/strong\u003e: PH2.0-2P\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eVideo playback\u003c\/strong\u003e: MP4 video format, sharing storage space with pictures. If a video file has a resolution of 800*600, 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.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eReliability parameters\u003cbr\u003eOperating Temperature\u003c\/strong\u003e: 20~+70°C\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e: 30~+80°C\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eESD Test\u003c\/strong\u003e: IEC 61000-4-2 Air: ±10KV (no restart).\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eEFT Test\u003c\/strong\u003e:IEC61000-4-4 Standard 4 (Voltage: +4kV; Frequency: 5kHz; Duration: 120s); No restart, display abnormalities, touch abnormalities, etc.; Test functions are normal.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eRadiated Radiation Test\u003c\/strong\u003e: EN55022 Class B,Test environment: three-meter dark wave chamber.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan class=\"magic-8\"\u003e\u003cspan class=\"magic-9\"\u003e\u003cstrong\u003eCore competitiveness of products\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003eLearning cycle\u003c\/strong\u003e: 30 minutes to familiarize yourself with the development environment, 3 days to complete human-computer interaction design.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eProgram debugging\u003c\/strong\u003e: The host computer integrates a \"virtual serial port screen,\" eliminating the need for hardware connection and allowing direct Keil debugging. IDE-bound debugging\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eStartup Time\u003c\/strong\u003e: Runs instantly upon power-up, eliminating system loading time\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eConfiguration Controls\u003c\/strong\u003e: 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.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eSystem Keyboard\u003c\/strong\u003e: Built-in virtual numeric and character keyboards, supporting Chinese and English input methods, and customizable keyboards.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eData Logging\u003c\/strong\u003e: Supports exporting data logger content to an SD card.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eLayer Technology\u003c\/strong\u003e: Multiple display layers are built into the system for faster switching.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eMultilingual Capability\u003c\/strong\u003e: Factory-preset up to 15 global languages, enabling one-click switching without the need for multiple UIs.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eLogical Operation Processing\u003c\/strong\u003e: 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.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eRemote Upgrade: Supports remote serial port upgrades of display firmware, project files, specified images, configuration files, and fonts.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eLifecycle\u003c\/strong\u003e: Utilizes a traditional, leading-edge processor, ensuring long-term supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan class=\"magic-8\"\u003e\u003cspan class=\"magic-9\"\u003e\u003cstrong\u003e4 Inch Serial Port Screen\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003eDisplay Type\u003c\/strong\u003e: IPS LCD\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eBacklight\u003c\/strong\u003e: LED\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eBrightness (cd\/m²)\u003c\/strong\u003e: 500\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eBacklight Lifespan (hours)\u003c\/strong\u003e: \u0026gt;20,000\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eContrast Ratio\u003c\/strong\u003e: 1200:1\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eViewing Angles (L\/R\/T):\u003c\/strong\u003e 80\/80\/80\/80\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cb\u003eTouch panel  (capacitance optional)\u003cbr\u003e\u003c\/b\u003e\u003c\/strong\u003e\u003cstrong\u003eTouch type\u003c\/strong\u003e: capacitive touch screen (IC: GT911)\u003cbr\u003e\u003cstrong\u003eCapacitive screen touch mode\u003c\/strong\u003e: single point, sliding touch\u003cbr\u003e\u003cstrong\u003eCapacitive screen transmittance\u003c\/strong\u003e: more than 90%\u003cbr\u003e\u003cstrong\u003eNumber of touches on the capacitive screen\u003c\/strong\u003e: The number of touches on the capacitive screen is theoretically unlimited, and the touch life is related to the working environment (dust, humidity).\u003cbr\u003e\u003cstrong\u003eCapacitive cover customization\u003c\/strong\u003e: The \"glass cover + capacitive touch\" integrated fitting service can be customized according to the user's drawing size.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cb\u003eCustomized services\u003c\/b\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cspan class=\"magic-8\"\u003e\u003cspan class=\"magic-9\"\u003e\u003cstrong\u003eCustomization Fees\u003c\/strong\u003e: For orders of 1,000 units, some customization fees may be waived.\u003cbr\u003e\u003cstrong\u003eHardware Circuits\u003c\/strong\u003e: Customizable PCB size, circuit thickness, custom circuitry, military-grade temperature display, and more.\u003cbr\u003e\u003cstrong\u003eSoftware Customization\u003c\/strong\u003e: Customizable instructions or controls based on user needs, reducing development effort.\u003cbr\u003e\u003cstrong\u003eDesign Services\u003c\/strong\u003e: Graphic design and product structure design services available.\u003cbr\u003e\u003cstrong\u003eOther\u003c\/strong\u003e: Customizable on demand to meet all user needs.\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"magic-8\" style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan class=\"magic-9\"\u003e\u003cstrong\u003eInstallation diagram\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cimg class=\"alignnone size-full wp-image-30776\" src=\"https:\/\/www.youritech.com\/uploads\/2025\/10\/ET040DH7272-DC_03.jpg\" alt=\"\" width=\"930\" height=\"134\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eStep 1: Make a hole in the casing and put the product in from the front;\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eStep 2: Tear off the adhesive tape;\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eStep 3: Embed the serial port screen into the customer cabinet and fix it with 3M adhesive;\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eStep 4: Installation completed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003ePRODUCTION AND MANUFACTURING\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cimg class=\"alignnone size-full wp-image-30390\" src=\"https:\/\/www.youritech.com\/uploads\/2025\/10\/%E4%B8%B2%E5%8F%A3%E8%AF%A6%E6%83%85%E9%A1%B5_13.jpg\" alt=\"\" width=\"930\" height=\"601\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eApplication Areas\u003c\/strong\u003e \u003cimg class=\"alignnone size-medium wp-image-30391\" src=\"https:\/\/www.youritech.com\/uploads\/2025\/10\/%E4%B8%B2%E5%8F%A3%E8%AF%A6%E6%83%85%E9%A1%B5_15.jpg\" alt=\"\" width=\"930\" height=\"669\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"YOURITECH","offers":[{"title":"Default Title","offer_id":52522042851637,"sku":"ET040DH7272-DC","price":53.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/2221\/3685\/files\/ET040DH7272-DC-1.jpg?v=1775024223","url":"https:\/\/youritech-online.com\/products\/4-inch-circular-ui-serial-screen-720x720-configuration-lua-script-serial-tft-display-with-capacitive-touch-for-medical","provider":"YOURITECH","version":"1.0","type":"link"}