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3.0 Inch RS485 HMI Display 360x640 TFT Screen - High-Quality China Suppliers and Factory Product

▶ Model: HTM-H030A9-RS485-A01

▶ Type: 3.0 inch TFT Panel Display

▶ Display Resolution: 360x640 pixels

▶ Dimensions (mm): 43.69 x 100.0 x 10.0

▶ Display Size: 3.0 inches

▶ AA Size (mm): 36.72 x 65.28

▶ Application: Ideal for household appliances and handheld instruments

▶ Viewing Angle: IPS technology for enhanced visibility

▶ Backlight Brightness: 350cd/m² for superior clarity

▶ Interface: RS485, suitable for various applications

▶ Special Features: Anti-static ESD protection up to 8KV

▶ Operating Temperature Range: -20 to 70℃, ensuring reliability in diverse environments

▶ Supply Voltage: 3.3V, energy efficient and effective

This high-quality 3.0 inch TFT panel is manufactured by leading China suppliers and is ideal for diverse applications, including household electronic devices and portable instruments. As a trusted factory, we prioritize durability and performance, making this display a perfect choice for your needs.

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 KEY FEATURES

Dual-Interface Versatility Built-in RS485 for long-distance industrial networking and UART-TTL for localized rapid prototyping.

Bar-Type High-Definition Aesthetics The 360x640 pixel density provides sharp, vertical-oriented visuals, ideal for modern "Slim-Line" device enclosures.

Multi-Method Resource Updating Supports USB Type-C, TF Card, and dedicated download PCBs, allowing for instant firmware and UI theme updates.

Extreme Environmental Resilience Rated for -20°C to 70°C operation; storage capabilities reach 80°C, handling thermal stress of industrial cabinets and outdoor enclosures.

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 3.0 inch RS485 HMI 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.

🚀 Ready to Upgrade Your HMI Solution?

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 (FAQ)

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 capability, making it ideal for factory floors and distributed systems with cable runs over 2 meters. The UART-TTL interface is intended for short-distance, direct connections (typically under 1 meter) and is commonly used during development, prototyping, or when connecting directly to a nearby MCU such as an Arduino or ESP32.

Q Does this 3.0 inch RS485 HMI Display require custom programming or coding skills to operate?

No advanced coding is required. The built-in EzUI "Zero-Code" engine handles all graphical rendering internally. Your host microcontroller simply sends straightforward serial commands over RS485 or UART-TTL to update the display content, making it accessible to both experienced engineers and hobbyists alike.

Q How do I update the UI resources or firmware on the HTM-H030A9-RS485-A01?

The display supports three convenient resource update methods: via a USB Type-C connection, through a TF Card, or using a dedicated download PCB. This flexibility allows you to push firmware updates and new UI themes quickly in both lab and field environments without specialized equipment.

Q What storage capacity options are available, and which one should I choose?

The 3.0 inch RS485 HMI Display is available in 128M-Bit and 1G-Bit storage configurations. If your user interface is relatively simple—basic icons, text, and a few static images—the 128M-Bit version is sufficient. However, if your design includes rich JPG animations, multiple language font libraries, or complex multi-page UIs, the 1G-Bit version is strongly recommended for smooth performance.

Q Is the 3.0 inch RS485 HMI 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 range of -30°C to 80°C, making it capable of withstanding the thermal stress found in industrial cabinets and outdoor enclosures. Additionally, the integrated 8KV ESD protection safeguards the module against electrostatic discharge common in industrial settings.

Q What power supply voltage does the HTM-H030A9-RS485-A01 require, and are there any special precautions?

The display requires a stable 3.3V 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 rest of the system. Failing to do so can cause data collisions, communication errors, or potential damage to the module's interface circuitry.