P4 Indoor LED Display
4 mm pixel pitch · 320×160 mm 20S modules · 80×40 resolution · module-direct or cabinet
The Excel LED mid-pitch line at 4 mm — 62,500 pixels per square meter, 20S scan with 2020 SMD chips, built module-direct or on die-cast aluminum cabinets — supplied by Excelled, a trusted LED display manufacturer for global B2B system integrators.
Quick Answer: What Is a P4 Indoor LED Display?
A P4 indoor LED display is a standard-pitch LED video wall with 4 mm between adjacent pixels — about 62,500 pixels per square meter — built around the 320×160 mm module.
• Confirmed factory configuration: 320×160 mm module, 80×40 resolution, 20S scan, 30 driver ICs, 2020 lamp beads.
• Alternative stock formats: 256×128 mm (32S, 1515 chips) and 256×256 mm (32S, 2020 chips) (confirmed, non-standard).
• Build options: module-direct on steel structure, or pre-assembled die-cast aluminum cabinets (typical).
• Best viewing distance: about 4 m and beyond — a budget workhorse for halls and signage.
• Brightness, refresh and price follow the confirmed BOM — Excel LED quotes per configuration.
One-Stop Solution of P4 Indoor LED Display
Excel LED supplies the P4 indoor LED display as a complete system — modules, cabinets or steel structure, power supplies, receiving cards, video processor and installation — all from one factory line, so integrators receive a matched wall instead of a pile of parts.
P4 is the budget-priced end of the indoor range: one step coarser than the P3 indoor LED display, it is the common choice for large halls, stage side-screens and signage watched from 4 m or more — where the pixel grid is invisible and the saving is the point.
mm Pixel Pitch
62,500 px/m² — the most cost-effective indoor video pitch.
×160 mm Module
The industry’s most stocked module size: 80×40 pixels, 20S scan.
S Scan / 30 ICs
Confirmed BOM: 20S scan with 30 driver ICs and 2020 lamp beads.
+ nits
1,000–2,000 nits typical — bright enough for daylit indoor spaces.
P4 LED Module: 320×160 (20S) and Stock Alternatives
The standard P4 module is the 320×160 mm format with 80×40 resolution, 20S scan, 30 driver ICs and 2020 lamp beads. The 2020 package is robust, bright and cheap — the right chip for a budget-priced pitch. Excel LED also stocks a 256×128 mm 32S module (1515 chips) and a 256×256 mm 32S module (2020 chips) for projects that need those tile sizes.
| Parameter | Specification |
|---|---|
| Module size | 320×160 mm (confirmed, standard); 256×128 / 256×256 mm stock alternatives |
| Module resolution | 80×40 px (320×160) (confirmed); 64×32 px (256×128); 64×64 px (256×256) |
| Total pixels | 3,200 per 320×160 module (confirmed) |
| Scan mode | 20S (320×160) (confirmed); 32S (256×128 / 256×256, non-standard) |
| Driver ICs | 30 per 320×160 module (confirmed) |
| Lamp beads | 2020 SMD (320×160 / 256×256) (confirmed); 1515 (256×128) |
| Mounting | Module-direct (screws to steel) or magnetic into cabinets |
Front vs rear maintenance on P4 modules
In the standard module-direct build, P4 is a rear-service system: modules screw onto the steel structure from the back, so repairs need a service corridor. That is the classic hall layout — cheap, and fine when the structure has rear access.
For walls where rear access is impossible, Excel LED quotes front-service magnetic modules on die-cast cabinets instead: each module is held by magnets and pulls out from the face. The front-service cabinet version costs more per square meter but removes the corridor requirement entirely.
P4 LED Display Cabinet Options and Materials
P4 is a module market, not a cabinet-platform market. Excel LED builds P4 walls three ways, and the material choice drives weight, installation speed and price.
| Item | Module-Direct ★ | 640×480 Die-Cast | 500×500 Rental-Style |
|---|---|---|---|
| Build format | Modules screwed to steel structure | 6-module aluminum cabinet | Die-cast cabinet, quick lock |
| Cabinet material | — (steel structure) | Die-cast aluminum (typical) | Die-cast aluminum (typical) |
| Modules per cabinet | — | 6 × 320×160 | 6–8 × 320×160 |
| Weight per cabinet | — | ~6–8 kg (typical) | ~8–10 kg (typical) |
| Maintenance | Rear (standard) | Front or rear | Front |
| Installation | On-site assembly | Pre-assembled, wall-mount | Floor-standing, fast build |
| Best for | Fixed halls on budget | Fixed walls with rear or front access | Temporary and staged events |
Materials behind each P4 build
The module-direct build uses no cabinet at all: 320×160 mm modules mount directly onto a steel structure welded to the wall. It is the lowest material cost and the most common hall configuration.
The 640×480 mm die-cast aluminum cabinet pre-assembles six modules at the factory, so on-site work shrinks to hanging panels and plugging cables. Aluminum stays flat under its own weight, which keeps the seam grid tight across large walls.
The 500×500 mm rental-style cabinet uses quick-lock connectors and front maintenance — overkill for a permanent wall, but the right call when the same panels tour between venues.
P4 LED Display Power Supply and Control System
Every Excel LED P4 wall is quoted with a matched power and control chain, so the brightness and refresh numbers in this guide are what the delivered system actually runs.
Power: a typical indoor P4 wall runs at 450–550 W/m² maximum and 150–200 W/m² average (typical) — the lowest draw in the indoor range, which keeps air-conditioning and cabling budgets down. Power supplies are industry-grade 5 V switching units with over-current and short-circuit protection; brand-level options are confirmed per quotation rather than assumed.
Control: the signal chain is sending card → video processor → receiving cards → modules, and P4 modules accept NovaStar, Huidu and Colorlight receiving cards. The standard load is one receiving card per 12–16 modules, depending on the processor model — the light data load of P4 lets one card serve a large panel count.
Features of P4 Indoor LED Screen
Budget Economy
62,500 px/m² at the lowest cost per square meter indoors.
Standard Tile
The industry’s most stocked module size — cheap spares everywhere.
20S Scan
Minimal drive electronics — the cheapest scan of the indoor range.
Aged & Calibrated
Every module runs a 72 h aging test and calibration before packing.
Bright Options
1,000–2,000 nits typical — handles daylit lobbies and halls.
Front or Rear Service
Magnetic front-service or screw rear-service modules — your choice.
P4 LED Display Product Matrix: 320×160 vs 256×256 vs Front-Service
| Item | 320×160 20S ★ | 256×256 32S | 256×128 32S |
|---|---|---|---|
| Module size | 320×160 mm | 256×256 mm | 256×128 mm |
| Resolution | 80×40 px | 64×64 px | 64×32 px |
| Scan / ICs | 20S / 30 ICs | 32S / 24 ICs | 32S / 12 ICs |
| Lamp beads | 2020 | 2020 | 1515 |
| Stock status | Standard | Stock alternative (confirmed) | Stock alternative (confirmed) |
| Typical use | Halls, signage, stage sides | Square-tile builds | Narrow-column builds |
P4 vs P3 vs P5 Indoor LED Display
P4 is the middle of the budget range. P3 gives 111,111 px/m², P4 gives 62,500 px/m² and P5 gives 40,000 px/m² — the gap between P4 and P3 is the real decision point; the gap to P5 only matters at very large sizes.
| Item | P3 | P4 ★ | P5 |
|---|---|---|---|
| Pixel pitch | 3 mm | 4 mm | 5 mm |
| Module size | 192×192 mm | 320×160 mm | 320×160 mm |
| Module resolution | 64×64 px | 80×40 px | 64×32 px |
| Pixels per m² | 111,111 | 62,500 | 40,000 |
| Scan mode | 32S | 20S | 16S |
| Best viewing distance | 3 m+ | 4 m+ | 5 m+ |
| Cost per m² | Higher | Mid-low | Lowest |
| Typical use | Church, hall, conference | Large halls, stage, signage | Very large indoor walls |
The P3 indoor LED display remains the better choice when viewers sit at 3–4 m. At 4 m and beyond — most auditoriums and stage areas — the P4 saves 20–30% of wall cost with no visible difference.
Use Scenarios of P4 Indoor LED Display
Auditoriums and large halls
P4 is the standard for large-venue backdrops and stage side-screens: 62,500 px/m² reads clean from the middle rows, and the low power draw keeps air-conditioning load down.
Church sanctuaries with long throw
Churches with seating starting 4 m+ from the screen choose P4 to stretch the budget: lyrics and sermon video stay legible, and the saving buys a second screen or a better processor. Combined with church LED screen planning, P4 covers the largest sanctuaries per dollar.
Signage and lobby displays
Building lobbies and retail signage use P4 for long-running brand loops and newsfeeds — the most economical indoor format that still shows video smoothly.
Schools and community halls
Multi-purpose halls pair P4 with indoor fixed LED display planning for announcements, events and presentations watched from mid-room distance.
How to Choose the Right P4 LED Display
- Measure the seating distance first. If the nearest viewer sits closer than 4 m, step down to P3; beyond 6 m, P5 costs even less.
- Decide maintenance access before quoting. Rear access → module-direct; no rear access → front-service cabinets. This single decision changes the price more than the pitch does.
- Pick the brightness for the room. 1,000–1,200 nits for controlled lighting; up to 2,000 nits for daylit lobbies.
- Match the control system to the content. Live feeds and streaming favor NovaStar-class processors with high refresh; static signage can run a lighter chain.
- Ask for the BOM. Module scan, IC count and lamp bead brand define price and longevity more than the pitch number alone.
How Much Does a P4 LED Display Cost?
P4 is the most price-competitive indoor pitch, and the cost is driven by module chip type, scan and IC count, build format and whether cabinets are used. Module-direct walls cost the least; front-service cabinet walls cost the most per square meter. Cost per square meter falls as wall size grows, and volume module orders cut unit price fastest. Excel LED publishes no single list price because every wall differs; the quotation splits modules, structure or cabinets, power, control and shipping.
When You Should NOT Choose a P4 Indoor LED Display
P4 Technical Specifications
| Parameter | Specification |
|---|---|
| Product type | Indoor fixed LED display |
| Pixel pitch | 4 mm (confirmed) |
| Pixel density | 62,500 px/m² |
| Module size | 320×160 mm (confirmed, standard); 256×128 / 256×256 mm stock alternatives |
| Module resolution | 80×40 px (confirmed); 64×32 px (256×128); 64×64 px (256×256) |
| Cabinet option | 640×480 mm die-cast aluminum, 6 modules (typical); 500×500 mm rental-style (typical) |
| Scan mode | 20S (320×160) (confirmed); 32S (256×128 / 256×256, non-standard) |
| Driver ICs | 30 per 320×160 module (confirmed) |
| Lamp beads | 2020 SMD (confirmed); 1515 (256×128 variant) |
| Brightness | 1,000–2,000 nits (typical, indoor) |
| Refresh rate | ≥1,920 Hz standard; 3,840 Hz high-refresh option (typical) |
| Gray scale | 14–16 bit, 68.7 billion colors |
| Viewing angle | 160°/160° horizontal/vertical |
| Max power | 450–550 W/m² (typical) |
| Average power | 150–200 W/m² (typical) |
| Working voltage | AC 100–240 V, 50/60 Hz |
| Maintenance | Rear (module-direct) or front (magnetic modules / cabinets) |
| Control system | NovaStar / Huidu / Colorlight compatible |
| Lifespan | ≥100,000 hours |
| Warranty | 2 years (Excel LED standard) |
P4 LED Display: Pitch, Resolution and Viewing Distance
Resolution on an LED wall is always screen size ÷ pixel pitch, per dimension:
Illustrative: a 6.4×3.2 m wall = 20×10 modules → 1,600×800 px. A 9.6×4.8 m wall (30×15 modules) → 2,400×1,200 px — a common stage side-screen configuration.
Viewing distance follows the same number: minimum comfortable distance is about 1× the pitch in meters — roughly 4 m for P4. Beyond about 8 m, the human eye stops resolving the 4 mm grid, which is exactly why P5 and coarser pitches take over on very large walls.
P4 Indoor LED Display
Why choose P4 pitch
P4 is the value king of large indoor walls: the most stocked module size (320×160), the cheapest scan (20S) and a robust 2020 chip set. For halls, stage areas and signage watched at 4 m and beyond, it delivers full video quality at the lowest indoor cost per square meter.
Maintenance method
Rear maintenance (module-direct)
The standard build: modules screw onto the steel structure from behind. Repairs need a service corridor, which is fine in halls designed with rear access.
Front maintenance (magnetic)
Magnetic modules on die-cast cabinets pull out from the face. No corridor needed — the right choice for walls against a wall.
Packaging of P4 indoor LED display screens
Modules ship vacuum-sealed in foam-cradled cartons, pre-aged and calibrated; cabinets travel on pallets with corner protectors; receiving cards, power supplies and a spare module set travel in a separate accessories carton with the manual.
Frequently Asked Questions About P4 LED Displays
Q1 What is a P4 indoor LED display?
A P4 indoor LED display is a standard-pitch LED video wall with 4 mm between adjacent pixels, about 62,500 pixels per square meter. It is built around the 320×160 mm module at 80×40 pixels, 20S scan, with 2020 lamp beads, assembled module-direct or on die-cast aluminum cabinets.
Q2 What is the resolution of a P4 LED display?
A 320×160 mm P4 module resolves 80×40 pixels, or 3,200 pixels per module. A wall’s resolution equals its size in millimeters divided by 4 in each direction — for example a 6.4×3.2 m wall gives 1,600×800 pixels.
Q3 What is the best viewing distance for a P4 LED display?
The minimum comfortable viewing distance is about 4 m, matching the 4 mm pitch. Text, graphics and video stay sharp from 4 m out to 8 m, which is why P4 is the workhorse for auditoriums, stage side-screens and large signage.
Q4 What are the specifications of a P4 LED module?
The confirmed standard P4 module is 320×160 mm with 80×40 pixels, 20S scan, 30 driver ICs and 2020 lamp beads. Excel LED also stocks 256×128 mm (32S, 1515 chips) and 256×256 mm (32S, 2020 chips) alternatives.
Q5 Is P4 indoor or outdoor?
The P4 indoor LED display is built for protected indoor environments, running 1,000–2,000 nits at IP20-class protection. A P4 outdoor wall is a different product with weatherproof modules, IP65 housings and much higher brightness — specify “indoor P4” or “outdoor P4” clearly when requesting a quote.
Q6 Can a P4 LED display be front-maintained?
Yes, in the magnetic configuration. Standard module-direct builds are rear-service, but Excel LED quotes magnetic front-service modules on die-cast cabinets when the wall has no rear access. The front-service version costs more per square meter but removes the corridor requirement.
Q7 What brightness does an indoor P4 LED display have?
Typical indoor P4 walls run 1,000–1,200 nits in controlled lighting and up to 2,000 nits in daylit lobbies. For a typical auditorium or hall, 1,000–1,200 nits is ample; the higher figure matters only where window light hits the screen.
Q8 What refresh rate should a P4 LED screen have?
The standard P4 module runs at 1,920 Hz, and the high-refresh version at 3,840 Hz with 14–16 bit gray scale. Choose 3,840 Hz when cameras will film the screen — stage coverage, church live streams — and 1,920 Hz for static signage.
Q9 Which control systems work with a P4 wall?
P4 modules accept NovaStar, Huidu and Colorlight receiving cards. Because the data load per module is low, one receiving card typically serves 12–16 modules; the video processor is matched to the wall’s total pixel count.
Q10 How many pixels per square meter does P4 have?
P4 delivers 62,500 pixels per square meter (1 ÷ 0.004²). A 9.6×4.8 m stage wall carries about 2.9 million pixels — well within a mid-range processor’s capability, and one reason P4 walls stay cheap to drive.
Q11 P4 vs P3 — which should I choose?
Choose P3 when the nearest viewer sits at 3–4 m — the extra density keeps fine text readable. Choose P4 when seating starts at 4 m or beyond: the visible difference disappears at that distance and P4 typically saves 20–30% of wall cost per square meter.
Q12 What is the lifespan of a P4 LED display?
Excel LED P4 modules are rated for 100,000+ hours with factory aging and calibration on every module. The standard warranty is 2 years covering LED failures, driver IC defects and power supply issues, with spare modules kept in stock.
Get Factory-Direct Pricing for Your P4 Indoor LED Display
Send Excel LED four details and receive a BOM-level quotation: 1. Screen size · 2. Viewing distance · 3. Installation environment & access · 4. Maintenance preference. Every quote lists modules, structure or cabinets, power, control and shipping separately.
P4 Indoor LED Display — 320×160 Module, 20S, Module-Direct or Cabinet
Excel LED supplies the P4 indoor LED display as a complete, factory-matched system: 320×160 mm 20S modules with 2020 lamp beads, module-direct or die-cast cabinet builds, rear or front maintenance and a 2-year warranty — quoted per project, not per square meter.
Related reading: P3 Indoor LED Display · P2.5 Indoor LED Display · Indoor Fixed LED Display · Church LED Screen · Indoor LED Screen · P1.86 Indoor LED Display