1. Product Information 1. Quantity and Lifespan: One set contains around 4 pieces. The lifespan of the LED chips can reach approximately 50,000 hours. 2. Quality and Applicability: It has delicate craftsmanship, is relatively durable, and has a stylish look. It is suitable for campers, boats, RVs, yachts, kitchens, bathrooms, cabinets, wardrobes, etc. 3. Installation Dimensions - Mounting holes: Minimum about 2.3 inches (58 mm), maximum about 2.55 inches (65 mm). - Diameter: Around 2.75 inches (70 mm). - Thickness: Approximately 0.5 inches (12 mm). 4. Material and Design - All - aluminum material and ultra - thin design: Made of all - aluminum, which is beneficial for the heat dissipation of the LED chip board. With a thickness of only about 0.5 inches (12 mm), it is light in weight and small in volume, suitable for narrow spaces. It has the ability to resist impact and vibration to some extent. 5. Technical Specifications - Input voltage: 12V DC. - Power: 3 watts. - Luminous flux: 240 lumens. - Color temperature: 3200K (warm white light). - Illumination angle: 120 degrees. - Energy efficiency class: A++. - Dimming function: It can be dimmed through a PWM dimmer (12 - 24V dimming switch, ASIN: B08SM3MKTS). 6. Precautions: It is suitable for campers and RVs equipped with a 12V DC power supply. The household power supply is 110V - 230V AC. If you want to use it at home, you may need a 12V DC power supply (the transformer is not included in the package). 7. Color: Warm white. 8. Energy - saving Advantage: Under similar lighting intensity, the power consumption of this LED light is more than about 5 times lower than that of halogen lamps. 9. Compact Design: The ultra - thin design helps to save some space and has relatively low requirements for installation conditions. It is suitable for RVs, boats, yachts, etc. 10. Installation Method: Installed with spring clips, it presents a neat appearance after installation. No screws are required. The depth of the mounting holes is only about 0.5 inches, and the diameter of the cutting holes is about 2.3 - 2.5 inches (58 - 65 mm). 11. Easy Replacement: It can relatively easily replace ordinary 2.75 - inch recessed lamps without additional accessories. 12. Durability: Without plastic and die - casting processes, the all - aluminum body provides good heat dissipation performance, and the lifespan of the LED chips can be up to approximately 50,000 hours. 13. Dimming Range: Compatible with 12V DC PWM - type LED dimming switches, with a dimming range of about 0 - 100%. 14. Other Specifications - Cable length: Around 7 inches (18 cm). - Weight: About 1.8 ounces each. 2. Special Instructions This ceiling light supports dimming.