Model : R4-10S-1921-H-3840Hz
P4 Outdoor Flexible LED Module – R4-10S-1921 H 3840Hz
P4 outdoor flexible LED module with 4mm pixel pitch, SMD1921 LEDs, 1/10 scan constant-current driving and 3840Hz refresh rate. The 320 × 160mm soft LED module supports curved installations and creativ
- Pixel pitch
- 4mm
- Brightness
- ≥4200cd/㎡
- Refresh rate
- 3840HZ
- IP rating
- IP65
Series · Nova Outdoor
Product Specification
P4 Outdoor Flexible LED Module – R4-10S-1921 H
The R4-10S-1921 H is a P4 outdoor flexible LED module designed for curved and creative LED display applications. It features a 4mm pixel pitch, SMD1921 RGB LEDs, 1/10 scan constant-current driving and a 3840Hz refresh rate.
Flexible Silicone Module Design
The module uses a flexible silicone base that supports curved LED display structures. It can be used to create cylindrical screens, ribbon-shaped displays, wave-shaped displays and other creative LED installations.
4200 cd/m² Outdoor Brightness
With brightness of ≥4200 cd/m² and brightness uniformity greater than 0.95, the module is designed for outdoor flexible LED display applications.
320 × 160mm Flexible LED Module
Each module measures 320 × 160 × 11mm and provides a resolution of 80 × 40 pixels, with a pixel density of 62,500 dots/m².
Magnetic Installation
The module is equipped with magnetic mounting for convenient installation and maintenance. Customized painted iron cabinet or frame structures are recommended for reliable installation.
Curved Display Capability
The module supports horizontal inner-arc and outer-arc curved installations with specified bending angles of ≥162°. Vertical curved assembly is not permitted due to waterproofing requirements.
3840Hz Refresh Rate
The module supports a 3840Hz refresh rate and a frame rate of ≥60 fps for stable outdoor LED display performance.
- Pixel pitch
- 4mm
- Brightness
- ≥4200cd/㎡
- Refresh rate
- 3840HZ
- Power
- ≤23W
- Resolution
- 80*40
- Cabinet size
- customized
- IP rating
- IP65
01 / SPECIFICATIONS
Performance at a glance.
Technical specifications for P4 Outdoor Flexible LED Module – R4-10S-1921 H 3840Hz. Contact us to confirm the configuration for your project.
| Pixel pitch | 4mm |
|---|---|
| Brightness | ≥4200cd/㎡ |
| Refresh rate | 3840HZ |
| Power | ≤23W |
| Resolution | 80*40 |
| Cabinet size | customized |
| IP rating | IP65 |
| Brightness | ≥4200 cd/m² |
|---|---|
| Brightness Uniformity | >0.95 |
| Horizontal Viewing Angle | 140° ±10° |
| Vertical Viewing Angle | 130° ±10° |
| Best Viewing Distance | ≥7.2 m |
| Gray Scale | 12–14 bits per RGB color |
| Display Colors | 4.398 trillion colors |
| Frame Rate | ≥60 fps |
| Refresh Rate | 3840 Hz |
| Brightness Adjustment | 256 levels, manual/automatic |
| MTBF | ≥5000 hours |
| Screen Horizontal Flatness | <1 mm/m² |
| Screen Vertical Flatness | <1 mm/m² |
| Cabinet Type | Customized Flexible Structure |
|---|---|
| Cabinet Size | Customized |
| Cabinet Shape | Customized according to application |
| Installation Structure | Painted iron cabinet/frame recommended |
| Pixel Pitch | 4 mm |
|---|---|
| Pixel Density | 62,500 dots/m² |
| Pixel Configuration | 1R1G1B |
| LED Package | SMD1921 |
| Module Type | Flexible / Soft LED Module |
| Module Size | 320 × 160 × 11 mm |
| Module Weight | 0.60 kg ±0.01 kg |
| Module Resolution | 80 × 40 pixels |
| Pixels per Module | 3,200 dots |
| Structure | LED and Driver Integrated |
| Input Voltage | DC 4.2 ±0.1 V |
| Maximum Current | ≤5.5 A |
| Maximum Module Power | ≤23 W |
| Drive Method | 1/10 Scan, Constant Current |
| 40A Power Supply Capacity | 5–6 modules |
| 50A Power Supply Capacity | 6–7 modules |
| 80A Power Supply Capacity | 10–11 modules |
03 / PRODUCT DESIGN & SIGNAL INTERFACE
Designed for your installation.

| HUB75E Pin 1 | RD1 - Red Data |
|---|---|
| HUB75E Pin 2 | GD1 - Green Data |
| HUB75E Pin 3 | BD1 - Blue Data |
| HUB75E Pin 4 | GND |
| HUB75E Pin 5 | RD2 - Red Data |
| HUB75E Pin 6 | GD2 - Green Data |
| HUB75E Pin 7 | BD2 - Blue Data |
| HUB75E Pin 8 | E - Row Control |
| HUB75E Pin 9 | A - Row Control |
| HUB75E Pin 10 | B - Row Control |
| HUB75E Pin 11 | C - Row Control |
| HUB75E Pin 12 | D - Row Control |
| HUB75E Pin 13 | CLK - Clock |
| HUB75E Pin 14 | LAT - Data Latch |
| HUB75E Pin 15 | OE - Enable |
| HUB75E Pin 16 | GND |
04 / ENGINEERING
Power architecture.
Power supply and consumption specifications for the selected configuration.
| Module Input Voltage | DC 4.2 ±0.1 V |
|---|---|
| Maximum Module Current | ≤5.5 A |
| Maximum Module Power | ≤23 W |
| Maximum Power per Square Meter | ≤454 W/m² |
| Distribution Power per Square Meter | ≤685 W/m² |
| 40A Power Supply Capacity | 5–6 modules |
| 50A Power Supply Capacity | 6–7 modules |
| 80A Power Supply Capacity | 10–11 modules |
INSTALLATION
Modules to cabinets.

ENVIRONMENT & SERVICE
Built for its working environment.
- 4mm pixel pitch outdoor flexible LED module
- ≥4200 cd/m² high brightness
- 3840Hz refresh rate
- SMD1921 RGB LED package
- 1/10 scan constant-current driving
- Flexible silicone base for curved LED display designs
- Supports inner and outer curved installations
- Supports cylindrical, ribbon and wave-shaped LED displays
- Magnetic installation for convenient assembly
- High contrast for clear outdoor display performance
- Supports single-pixel and single-LED maintenance
- 320 × 160mm flexible LED module size
- Lightweight and space-saving structure
Use modules from the same production batch on one LED screen to avoid visible color differences. Do not connect the LED module directly to 220V AC. Ensure that the DC power polarity is correct. Disconnect the main power supply before installing or removing modules, power cables or signal cables. Avoid excessive pulling, bending or twisting during installation and maintenance. Do not allow sweat, water or other liquids to contact the LED module during maintenance. Do not use galvanized steel plates or galvanized square tubes as the mounting structure. A painted iron cabinet or frame is recommended. Do not touch the LED surface directly to avoid electrostatic damage. Protect the module edges and corners from impact to prevent LED damage. For outdoor installations, ensure proper waterproof sealing around the screen structure and cabinet. Inspect grounding and lightning protection systems periodically.
| Application Environment | Outdoor |
|---|---|
| Operating Temperature | -20°C to +40°C |
| Operating Humidity | 10%–90% RH, non-condensing |
| Recommended Storage Temperature | -10°C to +30°C |
| Recommended Storage Humidity | 10%–60% RH |
| Maximum LED Module Surface Temperature | ≤70°C |
| Grounding Resistance | ≤10 Ω |
| Neutral-to-Ground Voltage | ≤2 V |
| Lightning Protection | Optional |
APPLICATIONS
Visual solutions for your space.
Its flexible silicone base allows the module to be used for curved LED displays, cylindrical screens, ribbon-shaped displays and wave-shaped LED structures.
With a 4mm pixel pitch, ≥4200 cd/m² brightness and 3840Hz refresh rate, the module is suitable for outdoor installations requiring flexible shapes and creative screen designs.
The supporting cabinet or frame is customized according to the required display shape and installation structure.
TECHNICAL RESOURCES
Product documentation.
R4-10S-1921-H-3840HZ_Hitu_English_Specification
IN PRACTICE
Project applications.
LET'S BUILD YOUR DISPLAY
Ready to specify your project?
Share your installation requirements with our team.
