The listing identifies SMD1921 and gives 64 × 32 pixels. That matrix is inconsistent with the listed pitch and dimensions. The linked PDF specifies 80 × 40 for a different model, P4-O10S-SMD2525-80×40. Use the actual board marking and its configuration file to resolve the difference.
Technical specifications
| LED Lamp Specification | |||||||
| Color | Package | Intensity | Viewing Angle | Wavelength | Testing Conditions | ||
| Red | SMD1921 | 450-600mcd | 120° | 620-625nm | 25℃,20mA | ||
| Green | 1000-1400mcd | 120° | 516-530nm | 25℃,20mA | |||
| Blue | 200-400mcd | 120° | 465-475nm | 25℃,20mA | |||
| Module Parameter | |||||||
| Pixel Pitch | 4mm | ||||||
|---|---|---|---|---|---|---|---|
| Pixel Configuration | SMD1921 | ||||||
| Density | 62,500 pixels/㎡ | ||||||
| Module Resolution | 64pixel(L) * 32pixel(H) | ||||||
| Module Dimension | 320mm(L) * 160mm(H) * 25mm(D) | ||||||
| Driving Mode | Constant current, 1/10 duty | ||||||
| Module Mask | Pure black mask—high contrast screen | ||||||
| Electricity Parameter | |||||||
| Optical Ratings | |||||||
| Brightness | ≥5,500 cd/㎡ | ||||||
| Viewing Angle | 120°(Horizontal); 120°(Vertical) | ||||||
| Best Viewing Distance | ≥4m | ||||||
| Gray Grade | 14 bit | ||||||
| Display Color | 4.4 trillion colors | ||||||
| Brightness Adjustment | 100 grades by software or automatically by sensor | ||||||
| Max. Power Consumption | 46W | ||||||
| Control System | |||||||
| Frame Frequency | 60Hz | ||||||
| Refresh Frequency | ≥1920Hz | ||||||
| Input Signal | Composite Video, S-video, DVI, HDMI, SDI, HD-SDI | ||||||
| Control Distance | 100m(Ethernet cable); | ||||||
| 20KM(optical fiber cable) | |||||||
| Support VGA Mode | 800*600, 1024*768, 1280*1024, 1600*1200 | ||||||
| Color Temperature | 5000—9300 adjustable | ||||||
| Brightness Correction | Pixel by pixel, module by module, cabinet by cabinet | ||||||
| Reliability | |||||||
| Working Temperature | -20~+60 ºC | ||||||
| Storage Temperature | -30~+70 ºC | ||||||
| Working Humidity | 10%~90% RH | ||||||
| Lifetime | 100,000 hours | ||||||
| MTBF | 5000 hours | ||||||
| Continuous Operating Time | ≥72 hours | ||||||
| Protection Grade | IP65 | ||||||
| Out-of-Control Pixel Rate | ≤0.01% | ||||||
Package and ordering information
Each module comes with an inter-module signal cable and a power cable for connection to the supply. Order all modules for one screen together so they come from the same production batch; different batches can vary in color and brightness. These modules are not supplied or supported as spare parts for existing older displays. Destination duties and customs clearance are the buyer’s responsibility.
Product documentation and photos


Download the P4-O10S-SMD2525-80×40 variant specification (PDF)
Frequently asked questions
Which resolution should I enter for this P4 LED wall module?
Confirm the number of rows and columns on the supplied board. The original listing gives 64 × 32 while the SMD2525 document gives 80 × 40. The two entries do not establish a single receiver setting.
What is the maximum power per board?
The listing gives a maximum of 46 W. Use that module rating alongside the intended cabinet layout when sizing the supply.
What does the model code on the PDF refer to?
P4-O10S-SMD2525-80×40 identifies the SMD2525 version. The product table below identifies SMD1921. Check the package and PCB revision before applying that document.







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