Test Your Photometry With The Best Testing Laboratories LM-79 is a standard that defines how the performance of an LED lamp or fixture should be measured A test according to LM-79 is carried out at a point in time and at a single temperature. Therefore, it gives no indication as [...]

Test Your Photometry With The Best Testing Laboratories LM-79 is a standard that defines how the performance of an LED lamp or fixture should be measured A test according to LM-79 is carried out at a point in time and at a single temperature. Therefore, it gives no indication as [...]