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3.0 inch RS485 HMI Display 360x640 TFT Screen - China Suppliers & Factory Model HTM-H030A9-RS485-A01

Introducing the HTM-H030A9-RS485-A01, a high-quality 3.0-inch TFT panel designed for various applications, including household appliances and handheld instruments. With a sharp display resolution of 360x640 pixels, this panel offers vibrant visuals and an impressive IPS viewing angle, ensuring clear images from multiple perspectives, Measuring 43.69mm x 100.0mm x 10.0mm, this compact display is perfect for integrating into your products. The AA size is conveniently at 36.72mm x 65.28mm. With a brightness level of 350cd/m², the HTM-H030A9 guarantees excellent visibility under different lighting conditions, Our product operates efficiently on a supply voltage of 3.3V and is built to withstand extreme temperatures, ranging from -20℃ to 70℃, making it ideal for various environments. Equipped with an RS485 interface, this TFT panel facilitates reliable communication, Furthermore, the HTM-H030A9-RS485-A01 features anti-static ESD protection up to 8KV, ensuring durability and longevity. As a trusted factory in China, we pride ourselves on providing high-quality products that meet industry standards. Partner with us, your reliable suppliers, to enhance your product line with our advanced display solutions

Product Details

The 3.0 inch RS485 HMI Display (Model: HTM-H030A9-RS485-A01) is a high-performance intelligent serial port screen engineered for robust industrial and commercial environments. Featuring a unique 360x640 resolution and a sleek 2:5 aspect ratio, this display utilizes a Normally Black IPS panel to deliver consistent, vivid colors (NTSC 60%) from any viewing angle.

The core of this module is its Dual-Protocol support, seamlessly integrating both RS485 and UART-TTL interfaces. This allows for long-distance, anti-interference data transmission—perfect for complex factory floors—while maintaining a simple UART debugging path for developers. With integrated 8KV ESD protection and a brightness of 350 cd/m², it ensures operational stability and visual clarity in mission-critical applications.

Specifications of 3.0 inch RS485 HMI Display

3.0 inch RS485 HMI Display 360x640 EzUI TFT Screen specification

Parameter of 3.0 inch RS485 HMI Display

ITEM	PARAMETER DESCRIPTION	UNIT
TFT series	HTM-H030A9-RS485-A01
Diagonal size	3.0"	Inch
Resolution	360x640	Dot
Dimensions	43.69x100.0x10.0	mm
Active area (AA)	36.72x65.28	mm
LCD type	TFT LCD Display	mm
Display viewing angle	Full View
Aspect ratio	2:5
Backlight type	LED white
TFT driver IC	-
Brightness	350	cd/m²
Operating temperature	-20~70℃	℃
Storage temperature	-30~80℃	℃

Core Selling Points & Competitive Advantages

1
Dual-Interface Versatility Built-in RS485 for long-distance industrial networking and UART-TTL for localized rapid prototyping.
2
Bar-Type High-Definition Aesthetics The 360x640 pixel density provides sharp, vertical-oriented visuals, ideal for modern "Slim-Line" device enclosures.
3
Multi-Method Resource Updating Supports USB Type-C, TF Card, and dedicated download PCBs, allowing for instant firmware and UI theme updates.
4
Extreme Environmental Resilience While rated for -20°C to 70°C, the storage capabilities reach 80°C, handling the thermal stress of industrial cabinets and outdoor enclosures.
5
EzUI "Zero-Code" Engine Offloads graphical processing to the internal engine, allowing your host controller to update the screen via simple serial commands.

Strategic Application Analysis

The narrow-strip form factor of the 3.0 inch RS485 HMI Display makes it a specialized solution for:

🏠

Smart Household Appliances High-end water purifiers, smart air conditioners, and kitchen appliances requiring a vertical touch interface.

🏭

Industrial Control Panels Status monitoring for server racks, localized PLC indicators, and specialized machinery control.

🛗

Elevator & Building Automation Floor indicators, security access panels, and smart lighting controllers.

🔧

Handheld Instruments Portable diagnostic tools that require a slim, easy-to-grip display with high-resolution data charts.

Who Should Invest in This Display?

⚙️

Industrial System Integrators If you require a display that can communicate over long distances in noisy electrical environments via RS485.
🏡

Smart Home Product Developers If you are designing slim, vertical-mount appliances that need a "Premium Look" with minimal coding effort.
🏥

Medical Equipment Manufacturers If you need a high-contrast, easy-to-clean display for diagnostic handhelds.
💡

Arduino & ESP32 Enthusiasts If you want a high-resolution HMI that doesn't exhaust your MCU's processing power.

Professional Buying Guide & Technical Considerations

1
Communication Choice For localized mounting (<1m), use the UART-TTL interface. For distributed systems or cable runs exceeding 2 meters, utilize the RS485 interface to ensure signal integrity against EMI.
2
Storage Requirements Choose between the 128M-Bit or 1G-Bit storage options based on your UI's complexity. If your interface includes heavy JPG animations or multiple font libraries, the 1G-Bit version is recommended.
3
Power Stability Ensure a stable 3.3V supply. In industrial settings with high-voltage machinery, ensure the RS485 ground is common with the system to prevent data collisions.
4
Screen Longevity To maintain the IPS panel's vibrancy, avoid static high-contrast patterns for periods exceeding 2 minutes. Utilize the built-in "Sleep Mode" or dynamic screensaver commands via the EzUI protocol.

Call to Action

The HOTHMI 3.0 inch RS485 HMI Display is the definitive "Smart Screen" for engineers who prioritize communication stability and modern design. By combining the power of the EzUI serial platform with an industrial-strength RS485 bus, it provides a reliable, high-resolution window into your machine's data.

Simplify your HMI development and secure your industrial data flow today. HOTHMI offers factory-direct pricing and full technical support for the HTM-H030A9-RS485-A01.

Frequently Asked Questions

Q What is the difference between the RS485 and UART-TTL interfaces on the HTM-H030A9-RS485-A01?

The RS485 interface is designed for long-distance, multi-node industrial communication with strong anti-interference capabilities, making it ideal for factory floors and distributed systems with cable runs exceeding 2 meters. The UART-TTL interface is best suited for short-range, point-to-point connections (under 1 meter), commonly used during prototyping and development with microcontrollers like Arduino or ESP32.

Q What is the EzUI engine and do I need to write complex code to use it?

EzUI is a built-in "Zero-Code" graphical engine embedded within the display module. It offloads all graphical rendering to the internal processor, meaning your host MCU only needs to send simple serial commands to update the screen. This dramatically reduces firmware complexity and frees up your microcontroller's resources for other tasks.

Q How do I update the UI resources or firmware on this 3.0 inch RS485 HMI Display?

The HTM-H030A9-RS485-A01 supports three convenient resource update methods: via a USB Type-C cable connected directly to a PC, via a TF Card (MicroSD) for on-site updates without a computer, or via a dedicated download PCB for production-line programming. This flexibility makes both development and mass deployment straightforward.

Q Is this display suitable for outdoor or harsh industrial environments?

Yes. The display is rated for an operating temperature range of -20°C to 70°C and a storage temperature of up to 80°C, making it resilient to the thermal stress found in industrial cabinets and outdoor enclosures. Additionally, integrated 8KV ESD protection safeguards the module against electrostatic discharge common in manufacturing environments.

Q Which storage option should I choose: 128M-Bit or 1G-Bit?

The 128M-Bit version is sufficient for simple UIs with basic icons, text, and a limited number of images. If your application requires complex JPG animations, multiple language font libraries, or a large number of high-resolution background images, the 1G-Bit version is strongly recommended to ensure smooth performance and ample resource storage.

Q What power supply voltage does the 3.0 inch RS485 HMI Display require?

The HTM-H030A9-RS485-A01 requires a stable 3.3V DC power supply. In industrial environments where high-voltage machinery is present, it is important to ensure that the RS485 ground reference is shared (common ground) with the host system to prevent data collisions and potential damage from ground potential differences.