How to Preserve Your Led Screens When the Weather Is Extremely Cold
This is the time of the year when many Customers ask me about the operating temperature of the LED video walls. The winter has come and apparently this is going to be a cold one...
A unit of measurement of the amount of brightness that comes from a light source. The standard lumen rating of a data projector is the average of photometer readings at several points on a full white image on the screen.
Technically, lumens measure "luminous flux." A wax candle generates 13 lumens; a 100 watt bulb generates 1,200. The lumen rating is a critical specification when choosing a data projector. In a darkened room, 500 lumens may be ample; however, in a conference room with normal lighting, 1,000 lumens would be better. In a room with bright daylight, 2,000 lumens is preferred.
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I recommend you for the quality of the pharmacy crosses in general and for the price. Even though it may seem high, is actually more justified than other less sophisticated led crosses that are on the market.