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1.54-inch UART HMI Display 240x240 IPS, China Suppliers & Factory for Smart Wearable Devices

▶ Model: HTM-H015A2-UART-A02

▶ Type: 1.54-inch TFT LCD Smart Display Module

▶ Display Pixels: 240x240

▶ Dimensions (mm): 45.0x58.0x1.95

▶ Effective Dimensions (mm): 27.72x27.72

▶ Display Size: 1.54 inches

▶ Application: Ideal for Smart Wearable Devices

▶ Viewing Angle: IPS technology for enhanced visuals

▶ Brightness: 350cd/m² for clear display

▶ Special Note: Features ESD Protection up to 8KV

▶ Operating Temperature: Ranges from -20 to 70℃

▶ Power Supply Voltage: Operates at 3.3V

This high-quality 1.54-inch TFT LCD Smart Display Module, model HTM-H015A2-UART-A02, is a perfect choice for developers and manufacturers in need of a reliable screen solution for smart wearable devices. As a leading factory in China, we provide top-notch products that meet rigorous quality standards. Our display module features a resolution of 240x240 pixels, a brightness of 350cd/m², and IPS viewing angle technology, ensuring vibrant colors and excellent visibility. With our commitment to ESD protection and a broad operating temperature range, our display module is suited for a variety of applications. Choose our products from trusted suppliers in China for your next project.

Product Details

The 1.54-inch UART HMI Display is a premium smart display module engineered to bridge the gap between complex graphical interfaces and simple microcontroller integration. Featuring a built-in command-based controller, this display allows developers to trigger high-quality 240×240 visuals via simple serial commands, drastically reducing the CPU load on the host MCU (such as Arduino, ESP32, or STM32). Built with an advanced IPS panel, it ensures 178° viewing angles and 350 cd/m² brightness, providing a brilliant, smartphone-like visual experience for compact wearable and IoT applications.

Specifications of 1.54-inch UART HMI Display

Item	Parameter Description	Unit
TFT Series	HTM-H015A2-UART-A02	—
Diagonal Size	1.54"	Inch
Resolution	240×240	Dot
Dimensions	45.0 × 58.0 × 1.95	mm
Active Area (AA)	27.72 × 27.72	mm
LCD Type	1.54" TFT Module	mm
Display Viewing Angle	Full View	—
Aspect Ratio	1 : 1	—
Backlight Type	LED White	—
TFT Driver IC	——	—
Brightness	350 cd/m²	cd/m²
Operating Temperature	-20 ~ 70 ℃	℃
Storage Temperature	-30 ~ 80 ℃	℃

Core Features & Key Selling Points

1 Built-in Smart HMI Logic: The integrated UART interface simplifies communication, enabling "Plug-and-Play" graphical deployment without complex low-level driver coding.
2 Vivid IPS Technology: Unlike standard TN screens, this module offers a Full Viewing Angle, ensuring colors remain accurate and text stays sharp from any perspective.
3 Industrial-Grade Reliability: Equipped with 8KV ESD protection and a wide operating temperature of -20°C to 70°C, making it resilient in both indoor and outdoor environments.
4 Ultra-Slim Architecture: At only 1.95mm thick, it is the ideal hardware choice for space-constrained smart wearables and portable gadgets.
5 Low Power, High Efficiency: Optimized for battery-operated devices, providing professional-grade visuals with minimal current draw.

Strategic Advantages of the 1.54" 240×240 IPS Specification

⌚

1.54-inch Form Factor

This size is the industry standard for smartwatches and compact IoT controllers, offering the perfect balance between high information density and ergonomic portability.

🔲

240×240 Resolution (1:1 Aspect Ratio)

This symmetrical resolution is ideal for circular or square UI designs, allowing for clear iconography and legible system status fonts.

👁️

IPS Viewing Angle Advantage

For wearable devices, the viewing angle is critical. IPS technology ensures that the user can read the display clearly even when their wrist or the device is tilted.

☀️

350 cd/m² High Brightness

While energy-efficient, the 350-nit output ensures the display is vibrant in indoor environments and perfectly readable in shaded outdoor conditions.

Versatile Applications of 1.54-inch UART HMI Display

The 1.54-inch UART HMI Display is the premier choice for:

⌚ Smart Wearables: High-end fitness trackers, compact smartwatches, and health monitoring bands.
📡 IoT Handhelds: Portable environmental sensors, smart home remote controllers, and wireless data loggers.
🏭 Industrial Mini-HMI: Small-scale machine status indicators and localized control panels for automated systems.
🛠️ DIY & Prototyping: The "Easy-to-Use" UART protocol makes it a favorite for makers using Arduino and Raspberry Pi who want a professional GUI without the steep learning curve.

FAQs of 1.54-inch UART HMI Display

Q1 Why should I choose a 1.54-inch UART HMI Display over a standard SPI display?

A UART display acts as a "Smart" module. It handles the graphical rendering internally, meaning your main controller only needs to send simple text strings to update the screen. This saves memory and processing power for your primary application logic.

Q2 Does this 1.54-inch UART HMI Display support custom UI design?

Yes. Through the UART protocol, you can define coordinates, draw shapes, and display pre-loaded icons or fonts, allowing for a fully customized brand experience.

Q3 Is the 350 cd/m² brightness enough for outdoor use?

350 cd/m² is excellent for indoor and semi-outdoor (shaded) environments. For high-performance wearables, the IPS technology helps maintain visibility even in bright light by reducing color washout.

Q4 Can I add a touchscreen to this 1.54-inch UART HMI Display?

Absolutely. HOTHMI offers optional Capacitive or Resistive touch integration, along with custom cover glass treatments (AG/AR/AF) to meet specific project requirements.

Q5 What microcontrollers are compatible with this UART HMI Display?

This display is compatible with a wide range of microcontrollers that support UART serial communication, including Arduino, ESP32, STM32, Raspberry Pi, and most other popular development platforms.

Q6 What makes the IPS panel better than a standard TN panel for wearable devices?

IPS panels deliver accurate colors and sharp contrast across all viewing angles (up to 178°), which is essential for wearables where the screen may be viewed from various orientations. TN panels suffer from color shift and reduced contrast when viewed off-axis, making them less suitable for wrist-worn or handheld devices.