1. Introduction
Thank you for choosing the Yeelight Smart LED RGB Ceiling Light. This manual provides essential information for the safe and efficient use of your new smart lighting product. Please read this manual thoroughly before installation and retain it for future reference.

The Yeelight Ultra Slim Smart Ceiling Light offers versatile control and smart home integration.
2. Safety Information
- Ensure the power is turned off at the circuit breaker before installation or maintenance.
- Installation should be performed by a qualified electrician if you are unsure.
- Do not disassemble or modify the product.
- Keep the product away from direct water spray, although it is IP54 water-resistant, it is not submersible.
- Operate within the specified voltage range (220-240V~50/60Hz).
3. Package Contents
The package typically includes:
- Yeelight Smart LED RGB Ceiling Light (selected model)
- Mounting hardware (screws, anchors)
- User Manual (this document)
4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | Yeelight |
| Power Source | AC |
| Rated Input | 220-240V~50/60Hz |
| Power Factor | 0.9 |
| Color Temperature | 2700K-6500K |
| Operating Temperature | -20°C to +40°C |
| Operating Humidity | 0-85% RH |
| Communication Method | Bluetooth-Compatible, Wi-Fi |
| Wireless Communication | Yes |
| State of Assembly | Ready-to-Go |
| Control Channels | 2 CHANNELS |
| Water Resistance | IP54 (Dust and Insect-proof) |
| Compatible with | Android 4.4 & iOS 9.0 or above |
| Certification | CE |
| Model No. | Rated Power | Luminous Flux @4000K | Size (Diameter) |
|---|---|---|---|
| YLXDD-0030 (235C) | 18W | 1200lm | Φ235mm |
| YLXDD-0033 (300C) | 21W | 1600lm | Φ300mm |
| YLXDD-0034 (400C) | 24W | 2000lm | Φ400mm |
The lamp body is ultra-thin, with the thickest part being only 25mm.

Visual representation of the product specifications.

Key features of the Yeelight Smart LED Ceiling Light.
5. Setup and Installation
5.1 Physical Installation
- Turn off Power: Before starting, ensure the power supply to the installation area is completely off at the main circuit breaker.
- Mount the Base: Securely attach the light's base to the ceiling using the provided mounting hardware. Ensure it is firmly fixed.
- Connect Wiring: Connect the live, neutral, and ground wires from your ceiling to the corresponding terminals on the light fixture. Follow local electrical codes.
- Attach the Light Fixture: The Yeelight Smart LED Ceiling Light features a patented quick-change fixture. Gently align the light body with the installed base and lock it into place.

The quick change fixture allows for easy and secure installation.
5.2 Smart Home Integration (Wi-Fi Setup)
The Yeelight Smart LED Ceiling Light connects directly to your Wi-Fi network, requiring no additional gateway.
- Download the App: Download the Yeelight app from your smartphone's app store (available for Android 4.4 & iOS 9.0 or above).
- Create an Account: Open the Yeelight app and create an account or log in.
- Add Device: Follow the in-app instructions to add your new ceiling light. This typically involves turning the light on, then off and on a few times to enter pairing mode, and then selecting the device in the app.
- Connect to Wi-Fi: Select your home Wi-Fi network and enter the password when prompted.
- Voice Control Setup: Once connected to the Yeelight app, you can link your light to Google Assistant, Apple HomeKit, Amazon Alexa, or Samsung SmartThings through their respective apps or settings.

Control your light anytime, anywhere with the Yeelight app.
6. Operation
6.1 App Control
The Yeelight app provides comprehensive control over your ceiling light:
- On/Off: Toggle the light on or off.
- Brightness Adjustment: Dim or brighten the light to your desired level.
- Color Temperature: Adjust the white light from warm (2700K) to cool (6500K).
- RGB Mood Lighting: Choose from 16 million colors for ambient backlighting. You can use the main light and mood light together or separately.
- Moonlight Mode: Activate ultra-low brightness for a soft, comfortable glow, perfect for nighttime.
- Scene Modes: Select from pre-set scenes or create custom lighting scenes to suit different moods and activities.
- Scheduling & Timer: Set schedules for the light to turn on/off automatically or use a timer for specific durations.

Experience 16 million colors for a personalized ambiance.

Moonlight mode provides a cozy, glare-free light for relaxation.
6.2 Voice Control
Control your Yeelight Smart LED RGB Ceiling Light using voice commands through compatible smart assistants:
- Google Assistant: "Hey Google, turn on the ceiling light." "Hey Google, set the ceiling light to blue."
- Amazon Alexa: "Alexa, dim the ceiling light to 50%." "Alexa, change the ceiling light to warm white."
- Apple HomeKit: "Hey Siri, turn off the bedroom light." "Hey Siri, make the living room light brighter."
- Samsung SmartThings: Use SmartThings routines and voice commands to integrate with your smart home ecosystem.

Voice control allows for hands-free operation.
6.3 Remote Control (Optional Accessory)
If you have a Yeelight Smart Dimmer Switch or Remote Control (sold separately), you can also control the light without the app or voice commands.

Convenient manual control with an optional remote or dimmer.
7. Maintenance
The Yeelight Smart LED RGB Ceiling Light is designed for low maintenance:
- Cleaning: Ensure the light is off and cool before cleaning. Wipe the surface with a soft, dry cloth. For stubborn marks, a slightly damp cloth can be used, followed by a dry cloth. Do not use abrasive cleaners or solvents.
- Dust and Insect-proof: The IP54 rating helps prevent dust and insects from entering the fixture, reducing the need for frequent internal cleaning.
- Water Resistance: The IP54 water-resistant design makes it suitable for humid environments like bathrooms and kitchens, and even covered porches.

The IP54 rating ensures durability in humid conditions.
8. Troubleshooting
- Light not turning on: Check the power supply at the circuit breaker. Ensure the light is properly installed and wired.
- Cannot connect to Wi-Fi: Ensure your Wi-Fi network is 2.4GHz (5GHz is not supported). Try resetting the light by cycling its power off and on several times until it enters pairing mode. Ensure your phone is close to the light during setup.
- Voice control not working: Verify that the light is successfully linked to your smart assistant app (Google Home, Alexa, etc.). Check your internet connection and ensure your voice commands are clear.
- Light flickering: Check for loose wiring connections. Ensure the power supply is stable. If the issue persists, contact customer support.
9. User Tips
- Group Control: For multiple Yeelight devices, use the app to create groups for simultaneous control, simplifying your smart lighting experience.
- Automations: Explore the automation features in the Yeelight app or your preferred smart home platform to create routines based on time, sunrise/sunset, or other smart devices.
- Firmware Updates: Regularly check the Yeelight app for firmware updates to ensure optimal performance and access to new features.
10. Warranty and Support
This product comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package or contact your retailer for specific warranty terms and conditions. For technical support or further assistance, please visit the official Yeelight website or contact their customer service.






