Philips MASTER DimTone LED MR16 spotlight light bulbs are designed to mimic the behaviour of dimmable halogen and incandescent spotlights, while eschewing their lack of efficiency and minimal lifetime.Traditional light bulbs have a tendency to shift towards a warmer colour as they dim while LED traditionally maintains the same colour. DimTone technology successfully mimics this behaviour while delivering all the efficiencies and reduced maintenance costs associated with LED.Running at maximum output, this low voltage MR16 option emits a standard warm white beam, equivalent to a 35W light bulb. This changes to a much warmer white as its output reduces under dimming, making it a popular choice for environments that require a warm and relaxed ambience such as bars, restaurants and so on. The amount of energy consumed by the light bulb, though already minimal, also reduces under these conditions.This particular example is compatible with a broad range of dimmer switches and retrofits directly to existing MR16 fixtures. It diffuses its light within a 24 beam angle.This spotlight lamp is fitted with a low voltage 12V GU5.3 2-pin (5.33mm apart) base.Please note that this light bulb will operate with most AC and DC 12V transformers. However, some 12V transformers may have a minimum required load which may not be met when installing low powered LEDs: these drivers may cause flickering or the LEDs not to function correctly. If this issue arises it may be necessary to source a suitable LED driver. Please refer to the manufacturers website for compatibility.Please visit the manufacturer\'s website for up-to-date dimmer switch compatibility lists for this Philips LED MR16 Spotlight light bulb before purchase.To find the answers to some common questions about LED dimming, please read our guide Dimming for Dummies.