Minimum comfortable viewing distance in metres roughly equals the pixel pitch in millimetres. A P2.5 screen looks seamless from 2.5m; a P10 needs 10m.
Paying for finer pitch than your audience can perceive is the most common way LED budgets get wasted. A lobby screen viewed from 4m does not need P1.8; a roadside board read from 30m is perfectly served by coarse pitch — and the savings per square metre are large. Work out where the nearest realistic viewer stands, apply the rule, and resist the temptation to spec finer "to be safe".
For premium close-range walls — control rooms, TV studios, retail flagships — COB (chip-on-board) packaging is worth knowing: the LEDs are sealed under a resin layer, so the surface resists knocks, dust and cleaning far better than conventional SMD, and fine pitches stay uniform. Our COB video wall page covers the trade-offs in detail.
Answer these in order and send us the results — that is a complete enquiry.
Power and heat deserve one honest sentence: LED walls draw real current (figures are listed per model page), so budget the electrical circuit and ventilation with the screen, not after it.
The three environments have different physics — and shop windows are the one everyone gets wrong.
Indoor walls live in controlled light and prioritise pitch and colour; outdoor boards fight the sun with multi-thousand-nit brightness, sealed cabinets and weatherproofing. Behind glass is the trap: sunlight through a window can wash out an indoor screen, so window displays need outdoor-class brightness even though they hang indoors. Transparent LED designs exist exactly for this — bright toward the street, see-through from inside the shop.
Meeting rooms are their own case: an all-in-one conference LED or a 4K interactive touch panel replaces projector-plus-whiteboard in one device, with video-conferencing cameras and wireless casting built into the higher models. If the room seats under 20 people, start there rather than with a modular wall.
Every one of these has stranded a screen in a warehouse or on a wall.
MISTAKEThe screen looks great at night and vanishes into a grey rectangle every sunny afternoon.
DO THISWindow-facing screens need outdoor-class nits or purpose-built transparent LED — specify against the sunniest hour, not the demo at dusk.
MISTAKEP1.8 specified for a hall where the nearest viewer stands 6m away — the budget doubled for zero visible difference.
DO THISApply metres≈millimetres, then spend the savings on brightness, redundant power or spare modules instead.
MISTAKEThe wall is flush-mounted against concrete; the first dead module requires dismounting half the screen to reach from behind.
DO THISFlush installs need front-service cabinets. Decide the service direction at drawing stage — it is a cabinet choice, not a site improvisation.
MISTAKEThe control room wall arrives, then someone asks to show four sources at once — and the screen can only mirror one input.
DO THISAny wall showing more than one source needs a video wall processor specified with the screen: inputs, layouts and scaling are its job.
Short answers you can forward to your end customer.
Metres to the nearest viewer ≈ pitch in millimetres. 2–3m lobby → P2.5 class; 4–8m stage or hall → P3–P4; 10m+ outdoor reading → P6–P10. Finer than the rule buys nothing your audience can see.
Direct-sun outdoor boards run in the multi-thousand-nit class, versus hundreds of nits for indoor walls. The exact figure is on each product page — compare it against the sunniest hour your site faces, and remember shop windows count as sunlight.
SMD remains the cost-effective default for most pitches and outdoor work. Choose COB when the wall is fine-pitch, close to people, or exposed to touch and cleaning — its sealed surface and uniformity justify the premium in control rooms, studios and retail flagships.
Yes, and for Africa and South America we insist on it: a small spares kit (modules, power supplies, receiving cards) shipped in the same crate turns a future repair from a freight problem into a ten-minute swap.
Five things: nearest viewing distance, indoor/outdoor/window, total width × height, mounting surface, and what content plays. With those, an engineer returns pitch, brightness, cabinet layout, power draw and shipping volume within 24 hours.
Distance, location and size — an engineer replies within 24 hours with pitch, brightness, power and freight worked out.