| Material: | Aluminium&Galvanized sheet |
| Reflective film: | 3M Engineering grade or 3M diamond grade |
| Solar panel: | 15V/8W or custom |
| Battery: | 12V/8Ah or custom |
| Voltage: | DC 12V or DC 11.1V |
| Leds distance: | <4.5CM |
| Led color: | Red, Yellow or White |
| Flashing frequency: | 50±2/min |
| Visual distance: | >800m |
| Working in rainy days: | 360H |
| Size: | 600mm /800mm /1000mm or Custom |
Article 2. Standard Specifications. §3216. Exit Signs. (a) Luminance. Exit and directional signs shall have a luminance on the face of such signs of not less than 50 lux. The words used on such signs shall be in block letters at least 6 inches in height with a stroke of not less than 3/4 inch. Exception: Existing signs may have the word "EXIT
18/10/2008 · Stimuli All stimulus letters, luminance- or contrast-defined, were presented at a background rms noise contrast of 0.07. Details for generating luminance- and contrast-defined letters are described elsewhere (Chung et al, 2006).In brief, luminance-defined letters were generated by assigning a different luminance value to the letter, compared with its mid-gray background (see Figure 1).
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A special measurement device is used to deliver the nit rating of the sign. Outdoor LED signs can range from 5,000 to 8,000 nits or higher. In comparison, typical televisions range from 500 to 1,000 nits and indoor LED signs from 1,000 to 2,000 nits.
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When high entrance angle (>50º) performance is required fo r a given Sign (e.g. “keep right” symbols), it can be obtained easily by properly orientating the Sheeting on the Sign substrate. In such situations, the completed Sign should have the Sheeting positioned
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Here are our top 10 reasons to upgrade to outdoor hotel and motel LED signs. 1. General Exterior Signage. You already have general exterior signs, but your new LED alternatives will be far brighter, increasing visibility by multiple blocks in each direction. We like stacked signs, such as having a logo sign on top with either a scrolling or
Indicator Contrast - The luminance contrast within the indicator shall be at least 50.0 percent.. NASA-STD-3000/T, 9.4.2.3.3.9 Display Contrast Design Requirements "An adequate contrast of at least 7:1 should be maintained between foreground and background colors to enhance color perception and perceived image resolution."
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