This wall flush light from Nordlux requires one bulb. This wall flush light can be used both indoors and outdoors och you should not use bulbs with more than 10W.
From Lampemesteren
Nordlux - Ava Smart LED Ceiling Lamp Black
Conrad Electronic
Nordlux 2019016010 Ava Smart LED outdoor ceiling light LED (monochrome) LED 9.5 W Grey