There are two types of double-sided advertising machines: double-sided hanging advertising machines and double-sided vertical advertising machines.
It is an advertising player that is deployed indoors and faces both indoors and outdoors. Therefore, the brightness of the two screens is different.
Because the external screen is for external display, it needs a higher brightness: 800cd/m2.
cd/m2 is the unit of luminous intensity, one of the 7 basic units of the International System of Units (SI). Abbreviated as "kan", symbol cd.
Internal brightness: 400cd/m2
The double-sided vertical advertising machine is designed to be used indoors without interference from other strong light sources, so the brightness of its double-sided screen is mostly the same, unified at 400cd/m2.
