How to tell the difference from E27, E14, GU1O, MR16 LED lights?

Nowadays, LED lights are becoming more and more popular worldwide due to its high-tech, energy saving and environment-friendly. There are so many types of LED lights in the market that buyers cannot know what type they should choose. Here, we are going to bring you a real sense about the difference among all these models of LED lights such as E27, E14, GU10, MR16.


GU **: “G” stand for that the lamp holder is "plug-in" type, “U” stand for U-shape, and “figures” behind “GU” means foot hole center distance (unit is "millimeter"). The connection type of GU10 are two thick headed pins. GU10 lights are always used under high voltage. GU10 is a direct connection to 240v - When 240v (GU10) is used, there is no need for any transformers. Dimming can be achieved by using a dimmable GU10 LED globe with a standard trailing edge dimmer.



MR **: “MR” means Multi-faceted Reflector lamps, “figures” behind “MR” stand for the max outer diameter (unit is 1 / 8 inch).

MR16 caliber = 16 × 1 / 8 inch = 2 inch ≈ 50mm, the connection type of MR series are two nail like pins and MR16 lights are commonly used under low voltage.

MR16 has a 12v lighting connection which is stepped down from 240v to 12v using a transformer - Where 12v LED lighting is concerned, you need to use LED specific transformers for LED optimal performance.



E27 is the screw holder whose diameter is 27mm, E14 is the screw holder whose diameter is 14mm. There are also E26, E40 in the market. However, E27 and E14 are the most popular type used under high voltage.

E27 Connection


In a word, E27 and GU10 are used to describe lamp holder. But, MR16 is used to describe lamp cup. They are two different scope. So, can we get a LED light with MR16 and GU5.3? Yes,sure!


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