【G4 LED 12V】: Do not install this G4 12V LED bulb directly in the AC 100V-220V standard lighting system, because this will cause a short circuit and damage the bulb. If you want to use it on AC 220V, be sure to use a transformer! The light bulb is not dimmable. Not compatible with dimmers. Suitable for interior lighting of caravan/cabin. 【Suggestion by Using Transformer】: Please make sure your transformer (220V to 12V) is compatible with LED bulbs. Incompatibility can cause the LED to flicker or be damaged. If a halogen lamp transformer is used, the power of all bulbs must reach the minimum power of the transformer. Good to be used as chandelier above the dining table. 【Energy-saving】: G4 12V 2W LED lamp with 12*2835 SMD LED, warm white 3000K, 200LM, 360 degree light. G4 LED 2W replaces 10-20W halogen lamp, which can reduce energy consumption by more than 85%. The G4 12V LED lamp is very suitable for replacing the original halogen lamp on the cooker hood. 【Durable Quality】: G4 base,