iiyama LH4341UHS-B2 43-inch 4K commercial display

Consider it for a menu board, a price panel, a departure or appointment board, a retail aisle display or a reception screen in a bright space, where people are close enough to read detail. The 4K panel earns its place at short viewing distances; at long ones a Full HD screen of the same size would look the same and cost less to run.

For anything scheduled, yes. iiyama's specification lists no integrated software for this model, so nothing on the display holds a playlist, a timetable or a connection to a signage service. Its USB port is a media player port, which covers a fixed landscape loop from a stick, but a managed estate needs a player, a PC or a signage box on one of the three HDMI inputs.

More than the anti-glare models in the range will. iiyama lists this panel at 1% haze, which is a glossy surface, where the AG models use anti-glare coated glass with a matt finish at 25% haze. Glossy panels give slightly punchier colour and much stronger reflections. If the screen will face a window or sit under hard downlights, look at the 50-inch LH5041UHS-B2AG or the 65-inch LH6541UHS-B1AG instead.

Yes, iiyama lists this model for landscape or portrait orientation. The catch is that media playback is not supported in pivot, so a vertical screen has to be driven over HDMI. Decide the orientation before you specify the source, not after.

Yes. iiyama rates this model for 24/7 maximum non-stop operating time, with a fanless design, a 50,000 hour MTBF figure and a 0 to 40 degrees C operating range. That is the specification that separates it from a consumer television, which is neither built nor covered for continuous commercial use.

Anywhere indoors that is well lit, including a retail floor under bright ceiling lighting or a foyer with plenty of daylight in the room. What it will not do is sit in a shop window or a glazed frontage with sun falling on the glass; that is the job of a high-brightness display at around 800 cd/m2. Measure the light at the actual position if the answer is not obvious.

It has RS-232C, an RJ45 network connection and an IR input for monitor control, so power, source and volume can be driven from a control processor or over the network rather than by hand. A remote control is supplied for local use. Confirm network access with your IT team if the screens will be managed from a desk.

107W typical, 0.5W in standby and 0.3W switched off. The metal chassis is 968 x 557.5 x 54mm and weighs 8.9kg without its box, so it is a straightforward lift for two people onto a bracket. For comparison, the Full HD 43-inch LE4341S-B2 draws 53W and weighs 8.4kg.

Yes to both. Two 10W speakers are built in, and there is an RCA left and right line output for feeding an amplifier or a ceiling system. The built-in pair is fine for a short announcement near the screen but not for filling an open space with sound.

Size is only part of it. Both are 4K at 500 cd/m2, rated 24/7, fanless and listed for landscape or portrait, with two 10W speakers. The 50-inch uses a VA panel rated at 5000:1 static contrast behind anti-glare matt glass, so blacks hold better in a dim foyer and reflections are diffused, at 11.1kg and 115W. This 43-inch uses an IPS panel at 1200:1 behind a glossy 1% haze surface, in a metal housing at 8.9kg and 107W. Choose the 50-inch for a reflective or dimly lit position and a longer sightline; choose this one where the space is smaller, the light is controlled and the sturdier housing matters.