Cob Led Light Chip Bead 3W 120Lm 4000-4500K 40Mm 9-11VDC Natural White 5Pcs

What is this?The COB LED lamp beads are widely used in home, studio and other scenes to replace and repair floodlights, spotlight bulbs, panel lights, LED downlights, flashlights, track lights, stage lights, etc.What will I get?Light Color: Natural WhiteOutput Power: 3WInput Voltage: 9-11(2B3C)VDCRated Current: 300mALuminous Flux: 120lmColor Temperature: 4000-4500KLight Angle: 120 DegreesCenter Aperture: 6mm / 0.24 inchOuter Diameter: 40mm / 1.57 inch (OD)Material: Aluminum, PlasticPackage Content: 5Pcs x LED ChipsAre there any advantages of the product?It has the characteristics of low power consumption, high brightness and instant start. The base is made of aluminum, which is easy to dissipate heat and prolong the service life. There is no obvious flickering of the LED lamp beads, and your eyes will not get tired under the light.How to use it?1. The COB LED light beads must be powered by a constant current LED drive power supply that is consistent with the parameters of the light board.2. The COB LED light beads must be installed on the aluminum or copper radiator, and the back of the chip needs to be coated with silicone grease to avoid high temperature burnout.What should I notice?Please pay attention to the specifications and parameters of the COB LED lights.