Smart ceiling lamp Yeelight Mars C400 edge-lit — 16 million colors, energy class D

Yeelight Mars C400 is an edge-lit smart ceiling lamp that delivers adjustable ambient lighting with up to 16 million colors. Designed for home environments, the fixture supports color temperature adjustment and dimming to create customized scenes for living rooms, bedrooms or small offices. The lamp integrates with common smart controls to allow remote operation and scheduled lighting. Energy efficiency class D indicates moderate power consumption compared with more efficient classes.

Advantages

The edge-lit design produces even, glare-reduced illumination across the room while maintaining a slim ceiling profile. Support for 16 million colors and wide color temperature range enables precise mood and task lighting. Built-in smart compatibility allows control via apps, voice assistants or automation routines. The lamp is rated for typical residential use and can be installed in standard ceiling mounts.

Suitable for

• Living rooms where adjustable ambient and accent lighting is required
• Bedrooms for night, reading and wake-up lighting scenes
• Home offices or study areas needing dimmable task lighting
• Hallways and entryways for uniform, low-profile ceiling illumination

Key specifications

• Lighting type: edge-lit LED ceiling lamp
• Color capability: up to 16 million colors
• Color temperature: adjustable (warm to cool white)
• Dimming: smooth dimming via smart control or app
• Control options: mobile app, voice assistant and automation support
• Form factor: low-profile ceiling fixture suitable for standard mounts
• Energy efficiency class: D (moderate power consumption)

How to use

Install the Yeelight Mars C400 in a standard ceiling junction box following local electrical codes and the manufacturer’s mounting instructions. After powering the fixture, connect it to the home Wi‑Fi network using the Yeelight app or compatible smart home platform. Use the app or voice commands to select colors, set color temperature, create scenes, schedule on/off times and adjust brightness. For manual control, use any in-line wall switch as needed, then restore smart control through the app.

Recommendations

For balanced ambient lighting, set the color temperature to a neutral white for daytime use and switch to warmer tones in the evening. Use lower brightness levels for night scenes to reduce glare in bedrooms. When creating scenes for work tasks, select cooler white and higher brightness to improve concentration. Ensure periodic cleaning of the diffuser with a soft, dry cloth and switch off power before maintenance.