The DS-D4239RO-CQ is built for screens that go up on Thursday and come down on Saturday. It belongs to Hikvision's CQ rental line, where the engineering priority is not the last percent of image quality but how fast a crew can assemble, curve and strike a wall without damaging it.
Where the rental CQ cabinet is designed to be taken down, the DS-D4239CF-1AAB is designed to stay up. It is a fixed-installation outdoor cabinet in a 500 × 1,000 mm portrait format, which maps naturally onto building facades, vertical totems and freestanding pylon signs rather than onto square billboard shapes.
The DS-D4266CO-2APA is a large-format outdoor cabinet for surfaces read from the road. At 6.67 mm pitch and 22,500 dots per square metre it is not built for close inspection — it is built to stay legible at 6,500 nits under direct sun, which is the specification that actually decides whether a roadside screen works in Riyadh in July.
The DS-D42A0CO-2APA sits at the far end of the outdoor range: a 10 mm pixel pitch at 10,000 dots per square metre, intended for billboards and large-format signs where the audience is far enough away that finer pixels would be invisible and simply more expensive. On a screen read from twenty metres or more, P10 and P6.6 look identical — but the P10 wall costs materially less per square metre and draws less power per pixel delivered.
