G4 12V 2W: Do not install the G4 12V LED directly into the standard AC 100V-240V lighting system, as it may cause a short circuit or damage the LED lamp. If you want to use it with AC 100-240V, you need to use a transformer USE TRANSMANT: Please make sure the transformer is compatible with the LED light. Incompatibility causes the LEDs to flicker. When using a halogen transformer, all connected bulbs must reach the minimum output power of the transformer. Energy Saving: G4 12V 2W warm white 3000K with 12 SMD 2835 LEDs , 200 lm, light scattering angle is 360 degrees. The G4 2W LED replacement for 10-20W halogen bulb, which can reduce energy consumption by more than 85%. G4 LED bulb for cooker hood. Durable quality: G4 with pin base, 12*36mm, easy to install. Instant lighting. Lifespan: 30,000 hours. Lead and mercury free. No buzzing or flickering. Suitable for caravan/cabin interior lighting. Application: G4 12V pin base lamp is suitable for interior lighting and motorhome. Used for range hood, kitchen furniture, above sink, mirror cabinet, bathroom, ceiling, closet, hallway, RV, caravan, camping, cabin.