Terminology in light
Before deciding on a product, it is important to understand the basics of light,
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DOB
Driver On Board
Driver on board this feature means no drivers are required. fixtures are operated via 24VDC power supply ATP - Active thermal protection: Automatic thermal control, LED driver monitors the fixture's thermal output.

If overheating accrues it will gradually reduce output current (will not shut it until temperature goes down to zeo.
R9
Color Rendering Index
Color Rendering Index (CRI) is a rating system that measures the accuracy of how well a light source reproduces the (total) color of an illuminated object. CRI is an average value based on R1-R8. R9 is one of 6 saturated test colors not used in calculating CRI.

Since some percentage of the color Red can be found mixed into the various hues of most processed colors, the ability to accurately reproduce Red is key for accurately rendering colors of displayed objects. Lamps with highR9 values produce the most vivid colors.

Pin Out
Pin Out is a reference to the pins or contacts that connect an electrical device or connector. It describes the functions of transmitted signals and the circuit input/output (I/O) requirements.

Each individual pin in a chip, connector or singular wire is defined in text, a table or a diagram. Every connector must be properly mated to a connector that has the same function.
IP
Ingression Protection
IP consists of the letters IP followed by two digits and an optional letter. As defined in international standard IEC 60529, it classifies the degrees of protection provided against the intrusion of solid objects, dust, accidental contact, and water in electrical enclosures.

The standard aims to provide information regarding the waterproof performance which will determine the best fixture installation.
Photobiological
IEC/EN 62471
"Unified Glare Rating" method is an international index presented by CIE (International Commission on Illumination) and is used to evaluate and limit the psychological direct glare from luminaries. Contrary to glare index where the glare was rated using the luminance values of a single lumi- naries, this method calculates the glare of the entire lighting installation at a defined observer position.

An exact calculation of the UGR value at a defined observer position in a room is possible with modern lighting design programs. The lower the UGR value, the lower the glare. We can reduce the impact of glair with some simple methods. The higher you put the lights the lower is glair.

To lower the glare keeps light sources high, away from field of view. When we are choosing the lights, it is very important that we know where we will put them and how much illumination we need in the room and working places.
CRI
Color Rendering Index
Color rendering index is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with an ideal or natu- ral light source. Light sources with a high CRI are de- sirable in colors.

The CRI is calculated by comparing the color rendering of the test source to that of a "perfect" source, which is a black body radiator for sourc- es with correlated color temperatures under 5000 K, and a phase of daylight.
GAI
Gamut Area Index
Gamut Area Index. A color gamut is formed by a specific set of colors rendered by the source and is also referred to as the gamut area. If a di erent set of colors is used the gamut area will be di erent. The gamut of the colors rendered by the light source can be measured by a metric known as Gamut Area Index (GAI). Color rendering, CRI, and color Gamut are quite di erent but connected. If the color points used to calculate CRI are connected in a two-dimensional space, the bounded area they form is the gamut area.

Rendering the colors used in CRI with a black body, at a CCT of 3000K, will produce a CRI of 100. This is what light sources, of 3000K CCT, are generally compared to for the determination of CRI. For any light source that doesn√Ę‚?¨‚?Ęt render the color points exactly as rendered by the black body.

CRI will be less than 100. Connecting the rendered color points will form a gamut area. A gamut area can be defined for any light source that has been measured for CRI.
UGR
Unified Glare Rating
"Unified Glare Rating" method is an international index presented by CIE (International Commission on Illumination) and is used to evaluate and limit the psychological direct glare from luminaries. Contrary to glare index where the glare was rated using the luminance values of a single luminaries, this method calculates the glare of the entire lighting installation at a defined observer position.

An exact calculation of the UGR value at a defined observer position in a room is possible with modern lighting design programs. The lower the UGR value, the lower the glare. We can reduce the impact of glair with some simple methods. The higher you put the lights the lower is glair.

To lower the glare keeps light sources high, away from field of view. When we are choosing the lights, it is very important that we know where we will put them and how much illumination we need in the room and working places.