The standardfor a goodLED display

Input power of finished product ≤ rated value +10%

Enclosure UL94 V0 flame retardant; PS3 high-power source fitted with a fire enclosure

Key plastic parts rated UL94 V0; ball-pressure indentation on parts supporting live components at 125°C ≤2mm

Component temperature within ratings; at room temperature, accessible metal surfaces ≤60°C, LED face ≤77°C

Input-to-protective earth DC2500V, input-to-output DC4000V, no breakdown within 60s

Earthing resistance ≤0.1Ω (32A in China/EU, 40A in US, 120s)

Metal enclosure ≤5mA (rms); LED face / signal port ≤0.5mA (rms)

Voltage between L and N at the plug ≤60V within 2s after power-off

500g steel ball dropped from 1.3m without damage; Class 3 energy source not accessible

250N force applied for 5s without damage; clearance and creepage distances remain compliant

Key components short/open: no fire, no overheating, no breakdown

Blue light (400-500nm) irradiance ≤ RG1 low risk

Meets GB/T 9254.1 emission limits

Meets GB 17625.1 Class A harmonic limits

Meets EN 55032 radiated emission limits

Meets EN 55032 conducted emission limits

Harmonic current Class A

Pst≤1.0, Plt≤0.65, dc≤3.3%, dmax≤4.0%

Contact ±4kV, air ±8kV

Immunity at 3V/m across multiple bands from 80MHz to 5GHz

Power port 1kV, data port 0.5kV, 5kHz

Power port line-to-line / line-to-earth 2kV; data port 1kV

Immunity to conducted RF from 0.15MHz to 80MHz

Immunity to 1A/m power-frequency magnetic field

No abnormality at <5%/0.01s, <70%/0.5s, <5%/5s

Meets FCC Part 15 Subpart B radiated limits

Meets FCC Part 15 Subpart B conducted limits

Meets EN 55032 radiated emission limits

Meets EN 55032 conducted emission limits

Contact ±4kV, air ±8kV

Immunity at 3V/m across multiple bands from 80MHz to 5GHz

Power port 1kV, data port 0.5kV, 5kHz

Power port line-to-line / line-to-earth 2kV; data port 1kV

Immunity to conducted RF from 0.15MHz to 80MHz

Immunity to 1A/m power-frequency magnetic field

No abnormality at <5%/0.01s, <70%/0.5s, <5%/5s

The IPD process captures requirements and reviews price, performance, maintainability and compliance

8 major design areas, including structure, electronics and systems, reviewed individually with structural and thermal simulations

New materials require R&D approval and finished-product validation; all materials comply with RoHS

All 58 tests across 5 categories (environment / temperature rise / 4 safety items / structure / 26 photoelectric items)

All 58 tests passed, each requirement met, cost targets achieved and all issues resolved

Complete production-process validation, 200km transport simulation, and successful installation and maintenance tests

100+ DFM review rules; proven designs reused

18-72H burn-in; LED failure rate ≤10PPM

Rain-spray and airtightness tests passed

Brightness deviation <2%, chromaticity deviation <2‰, pixel-level calibration

Module-to-module color temperature deviation ±150K

±60° viewing angle, Duv<0.02

ΔE2000<3

ΔELab<0.3

LED pitch deviation ≤5%

Step difference ≤5%

125 tests on key materials (22 for LEDs, 12 for power supplies, cabinet structure + environment)

48 tests in 6 categories (12 photoelectric / structure / temperature rise / safety), all passed before mass production

Material records retained for 10 years; AQL 0.4 inspection; pass rate for materials entering production ≥99%

Changes to key materials require an assessment of cost, supply, quality and performance, followed by successful sample testing.

Fast, professional service with global coverage. Absen is the single accountable party throughout the process.

7×24 online response; on-site within 4-8h domestically / 24-48h internationally; closure in 4h / 24h / 72h

5-10 year warranty for fixed installations; full-lifecycle spare parts supply

15 tier-1 + 25 tier-2 service centers + 1,000+ partners, covering 165 countries

Solutions matched to the application, with performance, costs, risks and limitations clearly explained.

Structural design, power supply, cooling and wind loads are professionally checked. Configuration, lead time, warranty and exclusions are documented, keeping the solution, contract, delivery and acceptance aligned, with no hidden extras.

An online display calculator helps users check their selection against the application, dimensions, viewing distance, brightness and refresh rate.