Ceiling light Xiaomi Yeelight Arwen 450S LED 50W, round 45.5cm, adjustable cool/warm white

Xiaomi Yeelight Arwen 450S is a round ceiling LED fixture with 50 W total power and a 45.5 cm diameter, designed for universal indoor use. The luminaire features an unobtrusive slim profile (height 94.1 mm) and a glare-free surface that provides even illumination for rooms up to about 15 m². The fixture delivers adjustable color temperature from warm to cool white (2700–6500 K), an indirect RGB backlight for colored ceiling accents, and a high color rendering index (CRI 95) to reproduce furniture and surfaces naturally. The lamp is dimmable and supports human-centric lighting modes including day, night and moonlight settings. Energy consumption is specified at 50 kWh/1000 h and the product is supplied as a single unit.

Advantages

The Yeelight Arwen 450S combines adjustable white tones and indirect RGB backlighting in a single compact ceiling lamp, allowing precise control of atmosphere and visual comfort. The high CRI ensures faithful color rendering while the glare-free diffuser provides uniform illumination without hotspots. Connectivity with Yeelight and Xiaomi Home apps enables scheduling, scenes and remote control via smartphone or voice assistants. The layered cover design limits dust and insect ingress and the slide-lock mounting simplifies installation and replacement.

Suitable for

• Living rooms and lounges up to ~15 m²
• Kitchens and dining areas where adjustable color temperature is useful
• Bedrooms requiring night or moonlight modes
• Hallways and entryways needing indirect ceiling accents
• Smart home setups with app and voice control integration

Key specifications

• Light source: integrated LED
• Power consumption: 50 W
• Diameter: 45.5 cm
• Height: 94.1 mm
• Color temperature: adjustable 2700–6500 K
• Indirect RGB backlight for colored ceiling lighting
• Color rendering index (CRI): 95
• Dimmable: yes
• Energy consumption: 50 kWh/1000 h (energy label class F)
• Protection: dust protected (IP50)
• Weight: approx. 2.45 kg

How to use

Install the Yeelight Arwen 450S on a suitable ceiling junction box following the included slide-lock mounting instructions to secure the fixture quickly. Connect the supply according to local electrical regulations; the lamp works with standard mains wiring and remains functional for app and voice control when used with the optional battery-operated smart switch. Use the Yeelight or Xiaomi Home app to pair the lamp, select color temperature, set brightness levels, enable RGB backlight, choose pre-programmed scenes or create custom schedules. Voice control is available via compatible assistants once the lamp is added to the corresponding smart home platform.

Usage recommendations

For daytime activities that require concentration, set a cooler white tone (approximately 4000–5500 K). In the evening, choose warmer white (around 2800–3500 K) or the dedicated moonlight mode to reduce blue light exposure. Use the indirect RGB backlight sparingly for accent lighting to avoid visual distraction during tasks. Regularly check and clear the mounting slide-lock when upgrading to newer models to reuse existing holders and simplify replacement.