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    • What’s an LM79? – A Guide to IESNA Testing

      LM-79-08 It is the Illuminating Engineering Society of North America (IESNA) approved method for the Electrical and Photometric Measurements of Solid-State Lighting (SSL). It measures an LED luminaire or integral lamp as a whole system according to a standard process using specified equipment. Who can perform testing? LM-79-08 testing should be performed by EPA-Recognized Laboratories [...] More  →
    • What’s an IES File? – A Guide to IES Files for Photometrics

      A file with the IES file extension is an IES Photometric file that stands for Illuminating Engineering Society. They are plain text files that contain data on light for architectural programs that can simulate light. Lighting manufacturers might publish IES files to describe how various structures are affected by their product. The program using the [...] More  →
    • What’s DLC or UL? – A Guide to Lighting Certifications

      The UL (Underwriters Laboratories) Listing Mark This is one of the most common UL Listing Marks. If a product carries this Mark, Underwriters Laboratories found that samples of this product met UL’s safety requirements. These requirements are primarily based on UL’s own published Standards for Safety. This type of Mark is seen commonly on appliances and computer [...] More  →
    • What’s IP65? – A Guide to IP Ratings

      The IP Code, International Protection Marking, IEC standard 60529, sometimes interpreted as Ingress Protection Marking, classifies and rates the degree of protection provided against intrusion (body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. It is published by the International Electrotechnical Commission (IEC). The equivalent European [...] More  →
    • What’s CCT? – Choosing The Right Color Temperature

      What is CCT? CCT stands for color corrected temperature and refers to the appearance of white light, specifically how ‘warm’ or ‘cool’ it looks. Color temperature is stated in degrees Kelvin (K) takes its measurement from heating a black body radiator (such as a piece of tungsten) until it is white hot, and the hue [...] More  →