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The shift from halogen to LED technology for GU4 MR11 spots brings significant advantages. Halogen lamps are known for their heat emission and higher energy consumption. LED alternatives offer improvements in these areas.
Considering making the switch? Always measure the dimensions of your current halogen spot. Although the fitting is identical, the physical size of the LED version may differ and might not fit in all fixtures.
GU4 MR11 spots operate on a low voltage of 12 Volts. This means they cannot be directly connected to the standard power grid (230V). A transformer is required to convert the higher mains voltage to the necessary 12 Volts.
When choosing a transformer, it's important to ensure the total wattage of the connected GU4 LED lamps falls within the minimum and maximum power of the transformer. Too low a load can cause flickering, while overloading shortens the transformer's lifespan. If you want to connect dimmable GU4 LED spots, make sure to use a transformer suitable for both LEDs and dimming.
When choosing the right GU4 MR11 LED spot, it helps to understand some technical specifications. These determine the light output, color, and the way the light is distributed.
| Specification | Explanation | Typical Values for GU4 MR11 LED |
|---|---|---|
| Lumen (lm) | The total light output, indicating how bright the lamp is. A higher lumen number means more light. | 180 - 350 Lumens |
| Color Temperature (Kelvin) | Indicates the light color, ranging from warm white to cool white. Lower Kelvin values are warmer. | 2700K (very warm white) to 4000K (cool white) |
| Color Rendering Index (CRI) | The extent to which a light source renders colors truthfully compared to daylight. A value of 80 or above is generally good. | CRI 80-89 (good color rendering) or 90-99 (outstanding color rendering) |
| Beam Angle (°) | The spread angle of the light. A smaller angle creates a focused light beam; a larger angle provides wider light distribution. | 24° to 36° (medium-wide beam, suitable for accents) |
| Dimmable | Indicates whether the lamp's brightness can be adjusted. Pay attention to compatibility with your dimmer. | Yes or No, depending on the specific model |
Thanks to their focused light beam and compact size, GU4 MR11 LED spots are widely used for accent lighting and specific illumination tasks. They are often used to highlight objects, artworks, shelves, or displays in both residential and commercial environments.
For damp areas, such as bathrooms, it is important that both the fixture and the lamp have a suitable IP rating (Ingress Protection) to protect against splashing water or water jets.
Although both types of lamps have a pin spacing of 4 millimeters and run on 12 Volts, the difference lies in the shape. GU4 lamps have an MR11 reflector shape, while G4 lamps are compact capsule bulbs without a built-in reflector. An MR11 spot distributes the light more directly due to the reflector.
This depends on the type of transformer. Old, magnetic transformers are often not compatible with the low wattages of LED lamps and can cause flickering or even damage the lamp. For LEDs, an electronic transformer compatible with LED loads is recommended. Always check the minimum and maximum power ratings of your transformer.
Not all GU4 MR11 LED spots are dimmable. This is clearly stated in the product specifications. If you wish to adjust the brightness, choose a dimmable version and make sure you have a compatible LED dimmer, as traditional dimmers do not work well with LEDs.
The lifespan of a GU4 MR11 LED spot is considerably longer than that of a halogen lamp. On average, you can expect 15,000 to 25,000 hours of operation, which amounts to many years of use under normal conditions.