“Corona” LED Replacement Bulb, Cool White, 10-30VDC (3.0W), G4 Socket, Back Pin This is our brightest round LED replacement bulb for large spots and fixtures (e.g. dome lights). Proprietary PWM Constant-current drive and 21 x high output thermally-efficient SMD LEDs combine to give optimal performance in a G4 form factor. Cool white color typically used for exterior applications or work areas that demand crisp white illumination. For a warmer color bulb, please see our Corona Warm White LED Bulb. Input voltage must be DC (direct current) from a battery source, LED converter, or DC power supply. Not compatible with low voltage AC transformers (i.e. low voltage AC). Note: Check alignment of existing socket pin holes in your fixture. If not horizontal, a realignment of socket may be necessary. Features & Benefits: 21x High Output SMD LEDs Large diameter board for bigger fixture designs Constant-current drive topology Over-voltage protection No radiated heat Thermally efficient design Housing Finish/Material Anodized Aluminum Lens Material UV Stable Polycarbonate Dimensions 1.37 in. (34.8mm) dia x 0.35 in. (8.9mm) thick, pin length: 0.66 in (16.8mm) Input Voltage 10-30VDC Halogen Equivalency 20W Power Consumption 2.7W Driver Integrated Constant Current Fits Socket G4 (vertical mount) Output Color Cool White or Warm White Luminous Flux 290 lms or 270 lms Correlated Color Temperature (CCT) 5800-6800K Color Rendering Index (CRI) 81 Beam Angle (FWHM) 120 dg. Current Draw 233mA/12V117mA/24V LED Type/Quantity 21 x SMD Lifetime Hours 30,000 Electrical Protections Over-voltage, EMI Suppression Certification & Compliance CE, ROHS Warranty 2 Years ILBPG4-21C-B ILBPG4-21W-B