First, the LED size: 0603, 0805, 1210, 5050 is used on the LED lights with light emitting elements----LED size (English/metric), the following are details of these specifications:

0603: conversion to metric is 1005, that means the length of the LED component is 1.0mm, the width is 0.5mm. Referred to as 1005, English translation 0603.

0805: conversion to metric is 2125, that means the length of the LED component is 2.0mm, the width is 1.25mm. call 2125, English translation 0805.

1210: the conversion to metric is 3528, that means the length of the LED component is 3.5mm, the width is 2.8mm. 3528 for short, English name is 1210.

5050: this is a metric term that means the length of the LED component is 5.0mm, the width is 5.0mm. Call 5050.

Second, the LED led: 15 lights, 30 led, 60 lights are LED lights with soldered one LED per meter length elements generally 1210 size light bar is 60 LED,5050 per meter specifications lamp is 30 per meter LED, special 60 LED per meter. LED number of LED lights with different prices are different, which is differentiated LED lights with an important factor in price.

Third, the color temperature: refers to the standard black body heating, temperature increases to a certain degree of color from red-light red-orange-white-blue, changing light and bold colors are the same, we will bold the absolute temperature is called the color temperature of the light source.