Important Note: This wedge LED bulb could not compatible with electronic transformer in cabinet lighting, which might cause flicker. Please kindly check before purchasing. Dimension and Base Tips: *These LED bulbs are some taller and larger than the incandescent bulbs they replace. Make sure they will fit into your fixture. Please check the measurement on the picture. *For landscape lighting, the LED bulb is used to replace the T3-1/4 T5 T10 921 912 904 194 miniature wedge bulbs. *For automotive RV lighting, the LED bulb is used for T10 wedge bulbs replacement and for dome lights only, NOT for the automotive T5 Instrument Cluster Gauge Dashboard Indicator lamps and headlights. *The base is 0.38inch miniature wedge base.Please check on your bulbs if you are not sure if the base is suitable or not.Parameters Wattage: 3Watts Lumen output: 300lm Warm white 2700-3000K Color Rendering Index: 82 Low voltage working system: AC10-18V/DC12-30V, Works on 12AC/D