Selecting outdoor LED display modules for a large screen requires more than choosing a familiar pixel pitch. The module must fit the screen dimensions, cabinet layout, viewing zone, content, ambient light, service access, environmental exposure, control system, electrical design, and project budget.
The PO Series Outdoor LED Display Modules currently cover P1.53–P16 in 192×192mm, 256×256mm, 320×160mm, and 320×320mm formats. Five platforms—PO-S, PO-G, PO-SR, PO-SD, and PO-GD—address different technology, protection, and maintenance requirements.
This guide follows the order in which a buyer or system integrator should normally make decisions, from application requirements through compatibility and procurement.
1. Define the Screen and Viewing Requirements
Begin with the installation drawing, visible screen width and height, expected viewing zone, content type, required native resolution, screen orientation, and operating schedule. A display intended for detailed transport information has different requirements from a highway billboard showing large graphics.
Do not choose pixel pitch from viewing distance alone. Text height, content detail, screen size, audience movement, and acceptable pixel visibility all affect the result. Smaller pitches increase pixel density, while larger pitches provide more economical coverage for screens viewed from farther away.
| Planning Range | Typical Use | Main Design Question |
|---|---|---|
| P1.53–P3 | Close-viewing information, retail, transportation, and premium outdoor displays | Does the screen need fine text, detailed graphics, or a high native resolution? |
| P3.076–P6.67 | Commercial façades, urban signage, and general advertising | What balance of detail, screen area, brightness, and budget is required? |
| P8–P10 | Large billboards, stadiums, and long-distance signage | Will the content remain legible from the actual audience positions? |
| P16 | Very large, long-distance information and highway displays | Is economical area coverage more important than close-viewing detail? |
2. Calculate Resolution from Screen Size and Pixel Pitch
After establishing the physical screen dimensions, calculate the approximate native pixel dimensions. A screen that is 6,000mm wide using a 5mm pitch provides approximately 1,200 pixels across. Repeat the calculation vertically, then compare the result with the intended video format, text size, graphics, and controller capacity.
Module resolution and cabinet layout should divide cleanly into the target screen dimensions. If the required size cannot be built from complete modules and compatible cabinets, the project may need revised dimensions, a different pitch, or a different module format.
3. Select the Technology Platform
PO-S is the general-purpose choice for fixed outdoor SMD screens requiring a broad pitch range and rear-service construction. PO-G adds GOB protection to the LED-facing surface of P2 and P2.5 SMD modules. PO-GD uses MIP for high-density P1.53–P2.5 outdoor displays.
GOB and MIP describe different aspects of the product. GOB is a protective treatment over an SMD display surface; MIP is a pixel-packaging platform. Neither term alone defines the cabinet, maintenance method, rear protection, or complete-screen IP rating.
4. Choose the Module Size and Cabinet Layout
The PO Series includes 192×192mm, 256×256mm, 320×160mm, and 320×320mm formats. Module size affects cabinet openings, module count, screen resolution, seam layout, power and data distribution, packaging, spare inventory, and service workflow.
A 320×320mm module can reduce the number of modules required across a large screen, while 192×192mm or 320×160mm formats may suit other cabinet geometries. The best choice is the one that produces a clean mechanical layout and the required resolution—not automatically the largest or most common size.
5. Match Protection Structure to the Environment
Confirm which surfaces carry the stated IP rating. PO-S and PO-G use outdoor-rated module structures; PO-SR specifies IP65 at the front and IP54 at the rear cover; PO-SD and PO-GD include double-sided IP65-rated module options. Always follow the exact product-page specification.
The finished display requires its own weatherproof engineering. Confirm cabinet seals, module joints, connectors, cable entries, ventilation, drainage, corrosion protection, grounding, lightning protection, surge protection, and installation workmanship. A module-level IP rating does not certify the entire screen.
6. Plan Front or Rear Maintenance Before Ordering
Rear-service systems require safe access behind the screen and are common in free-standing billboards and structures with service corridors. Front-service systems are useful where rear clearance is restricted, but the module, cabinet, wiring, power supplies, receiving cards, and removal method must all support the planned access direction.
PO-S and PO-G are primarily rear-service platforms. PO-SR supports front-and-rear service configurations, PO-SD uses front service, and PO-GD service arrangements are model-specific. Confirm actual maintenance access from the product specification and cabinet drawing.
7. Specify Brightness, Refresh and Electrical Performance
Required brightness depends on sunlight exposure, screen orientation, latitude, shade, operating hours, and local regulations. Compare brightness together with contrast, colour uniformity, maximum and average power, heat dissipation, and night-time dimming.
For camera-facing screens, review refresh rate, scan rate, grayscale, driver IC, PWM behaviour, receiving-card settings, and controller output. A quoted 3840Hz refresh rate is useful but does not independently guarantee flicker-free recording under every camera setting.
Calculate power supplies and electrical distribution from the confirmed maximum module current and design margin. Include voltage-drop control, balanced loading, circuit protection, grounding, surge protection, ventilation, and local electrical requirements.
8. Confirm Signal and Control Compatibility
Before purchase, verify the data-interface type and pinout, scan configuration, driver IC, receiving-card capacity, firmware, configuration file, controller resolution, and calibration workflow. Products with the same pitch can require different receiving-card parameters.
Remote content updates, scheduled playback, monitoring, and automatic brightness adjustment belong to the complete control system. They require compatible receiving cards, sending controllers or players, communications hardware, sensors, software, and system configuration.
9. Evaluate Cabinet, Structure and Site Conditions
The LED module is only one layer of an outdoor screen. The cabinet determines module openings, alignment, sealing, internal wiring, airflow, service access, and load transfer to the supporting structure. Before ordering modules, confirm that the proposed cabinet accommodates the exact mounting points, thickness, connector locations, maintenance direction, and gasket arrangement of the selected model.
The structural engineer should assess dead load, wind load, seismic requirements where applicable, lifting and installation access, façade attachment, corrosion environment, and technician safety. Site planning should also cover drainage paths, ventilation, cable routing, lightning protection, grounding, surge protection, electrical isolation, and compliance with local permits or brightness restrictions.
10. Estimate Power, Heat and Operating Cost
Maximum module power is used to size power supplies, circuits, cabling, and protection devices, while average power helps estimate energy consumption under typical content. Neither figure should be multiplied blindly without considering system efficiency, design margin, voltage drop, controller equipment, fans, heaters, or other cabinet loads.
A smaller pitch can increase the number of pixels and electronic components per square metre, affecting both power density and cooling requirements. High brightness also increases thermal demand. Buyers should compare not only purchase price but also cabinet quantity, power infrastructure, control hardware, steelwork, installation labour, energy use, maintenance access, and spare-parts requirements over the expected operating period.
11. Compare the Five PO Series Platforms
| Series | Pitch Range | Structure | Choose It When |
|---|---|---|---|
| PO-S | P2–P16 | Standard outdoor SMD; rear service | You need a mature general-purpose platform with broad pitch coverage |
| PO-G | P2–P2.5 | GOB-protected SMD; rear service | The LED-facing surface needs additional handling and impact protection |
| PO-SR | P2–P10 | Rear cover; IP65 front / IP54 rear; front and rear service | The project needs an integrated rear cover and flexible maintenance access |
| PO-SD | P4–P10 | 320×320mm SMD; double-sided IP65; front service | A large-format protected front-service module is required |
| PO-GD | P1.53–P2.5 | Fine-pitch MIP; double-sided IP65; model-specific service | The project prioritizes close-viewing pixel density and detailed outdoor images |
12. Verify Replacement Compatibility and Batch Consistency
Matching the module size and pixel pitch does not guarantee direct compatibility. Confirm the cabinet opening, mounting points, screw or magnet positions, module thickness, power connector and polarity, signal interface and pinout, scan mode, driver IC, receiving-card settings, firmware, and calibration data.
Modules installed within the same screen should use the same confirmed configuration and, whenever possible, the same production batch. Variations in LED wavelength, brightness, mask finish, PCB layout, driver IC, firmware, and calibration can produce visible or operational differences.
13. Plan Spare Parts and Long-Term Maintenance
Outdoor screens should be supplied with an appropriate quantity of spare modules and critical components. The correct allowance depends on screen scale, operating importance, access difficulty, expected service period, and whether the same configuration will remain available later. Spares are most useful when they match the original production configuration and calibration workflow.
Keep product labels, drawings, wiring diagrams, receiving-card programs, firmware, calibration databases, controller files, and purchase records in an accessible project archive. A maintenance schedule should include visual inspection, seal and cable-entry checks, cleaning, ventilation and drainage inspection, electrical testing, brightness review, and prompt investigation of intermittent faults.
14. Prepare a Complete Procurement Specification
Before requesting a quotation, prepare the screen width and height, required resolution, minimum and typical viewing distances, installation drawing, service direction, site photos, ambient-light conditions, operating schedule, mains voltage, control-system preference, communication method, environmental requirements, and delivery destination.
For an existing display, also provide the original module label, front and rear photographs, PCB markings, connector details, cabinet dimensions, receiving-card model, configuration file, and calibration information. Include spare modules from the same configuration and production batch whenever practical.
The quotation should identify the exact module model, pixel pitch, module dimensions and resolution, LED package, brightness, scan rate, refresh rate, protection structure, service method, data interface, input voltage, package quantity, included cables, lead time, shipping terms, and confirmed accessories. Any project-specific variation should be recorded before production rather than assumed from a family-level description.
15. Final Pre-Order Review
Before approving the order, confirm that the screen dimensions divide correctly into cabinets and modules; the native resolution supports the content; maintenance access is physically possible; protection ratings match the exposed surfaces; power and control capacity are sufficient; and the installation team has the necessary configuration files and drawings.
A sample or engineering evaluation can be useful when a project introduces a new cabinet, fine pitch, technology platform, camera requirement, or replacement scenario. Testing should reproduce the intended controller, receiving card, power supply, brightness, content, camera, and environmental conditions as closely as practical.
Explore the current PO Series Outdoor LED Display Modules to compare available pitches and structures. Final selection should always be confirmed against the model-specific product page and the complete project design.