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Common lamp holders specifications: E27, E40, E14

Installation is divided into bayonet, screw, bakelite, plastic, metal, ceramic and other materials from the material is divided into commonly used such as E27 lamp holder.screw lampholders is the most common energy-saving lamps and fluorescent in conjunction the lamp holder is usually known as the T8 lamp holder or T5 lamp holder, and the other up to IP68 the holder protection level according to the environment, at the time of purchase in accordance with the need to develop appropriate IP protection level holder (waterproof), usually with The lamp holder will use the IEC (International Electrotechnical Commission standard) safety certification,
Lamp holder:
E14, E27, E12, E26, E usually begin with: screw lampholders
GU10 GU beginning of referring to our day-to-day use of the bayonet type GU: G said the lamp type plug-in, U lamp part of a U-shaped behind the numbers that light foot hole center distance (mm mm) .
MR16, MR11 commonly used in the beginning of the MR-line local lighting spotlights, lamp holder, usually small spotlights two pins is easy to install.
MR16, GU10 the lamp holder, PAR30, 38 different diameter, are the world through a standard and it is called, are light cup, spotlights, it is called, each suitable for different ceiling light lamp holder.
MR16 refers to the maximum outer diameter of 2 inches with a multi-faceted reflector lamps in the lighting industry, MP11 is than MR16 smaller lamps,.
MRMR: Multiface Reflect, multi-faceted reflector (lamp cup), followed by numbers indicate lamp cup diameter (in units of 1/8 inch) the MR16 caliber = 16 × 1/8 = 2 inch ≈ 50mm
PAR lamps are generally PAR30 PAR36 PAR46 PAR56, the volume be long or short, also known as downlights, irradiation beam used to illuminate the stage, dynamic color change is a common fixture on the stage, because the power consumption is relatively large, and grilled feeling gradually replaced by LED PAR lamp
AR111/AR70 aluminum the cold reflector halogen spotlights
E27, E14 refers to the size of the ordinary screw cap lamp, E27 is what we usually use the incandescent lamp, E14 lamp holder is better than its smaller size than E27 E40.
G12 lamp holder is a single-ended metal halide lamp of the tubular.