Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your Sengled WiFi Smart LED Light Bulb A19 (Model: W31-N11DL). These smart bulbs offer convenient control and energy efficiency for your home lighting.

Image: Sengled WiFi Smart LED Light Bulb A19 4-pack packaging and bulbs.
Setup
Setting up your Sengled WiFi Smart LED Light Bulbs is a straightforward process. No additional hub is required; simply connect them directly to your home's 2.4GHz Wi-Fi network.
- Download the Sengled Home App: Download and install the Sengled Home app from the App Store (iOS) or Google Play Store (Android). Register for an account if you are a new user.
- Install the Bulb: Screw the Sengled Smart LED Light Bulb into a standard E26 light socket. Ensure the power is turned off before installation.
- Power On: Turn on the power to the light socket. The bulb should begin to blink, indicating it is in pairing mode.
- Follow In-App Setup: Open the Sengled Home app and follow the guided setup instructions to connect your bulb to your 2.4GHz Wi-Fi network.
- Voice Assistant Integration: If you plan to use Google Assistant, open the Google Home app and link your Sengled account.

Image: Easy setup guide for Sengled Smart Wi-Fi LED Lights, illustrating app download, installation, in-app guided setup, and personalization.
Operating
Your Sengled Smart LED Light Bulbs offer multiple ways to control your lighting for convenience and customization.
Voice Control
Control your lights using voice commands with Google Assistant. Simply say commands like:
- "Hey Google, turn on the [room name] lights."
- "Hey Google, dim the [room name] lights to 50%."
- "Hey Google, set [room name] lights to 5000K."
- "Hey Google, turn off the [room name] lights."

Image: Voice control in action, demonstrating how to adjust light brightness using a voice assistant.
App & Remote Control
Use the Sengled Home app to control your bulbs from anywhere. Adjust brightness, set schedules, and create scenes.
- Adjust Brightness: Easily dim or brighten your lights to suit any activity.
- Set Schedules: Program your lights to turn on/off or change brightness at specific times, automating your daily routines.
- Create Scenes: Customize lighting presets for different moods or activities (e.g., "Movie Night," "Reading").
- Group Control: Control multiple bulbs simultaneously by grouping them in the app.

Image: Remote control functionality, showing a user managing home lighting from a distance using the app.
Wake Up & Sleep Mode
Configure your lights to simulate natural light cycles:
- Wake Up: Schedule lights to gradually brighten over a set period, mimicking a sunrise.
- Sleep: Program lights to slowly dim, simulating a sunset to help you relax before sleep.

Image: Setting lighting schedules to automate lights turning on/off based on daily routines.
Maintenance
To ensure optimal performance and longevity of your Sengled Smart LED Light Bulbs, please observe the following:
- Avoid External Dimmers: Do not use these smart bulbs with traditional dimmer switches. Dimmers can reduce the electricity supply to the bulb, negatively impacting performance and potentially causing damage.
- Cleaning: Ensure the bulb is cool and the power is off before cleaning. Wipe with a soft, dry cloth. Avoid liquid cleaners.
- Indoor Use Only: These bulbs are designed for indoor use. Avoid exposure to moisture or extreme temperatures.
Troubleshooting
If you encounter issues with your Sengled Smart LED Light Bulb, consider the following steps:
- Connectivity Issues: Ensure your Wi-Fi network is 2.4GHz. These bulbs do not support 5GHz networks. Verify your router is functioning correctly and the bulb is within range.
- Bulb Not Responding: Try turning the light switch off and on to reset the bulb. If the issue persists, remove and re-add the bulb in the Sengled Home app.
- App Functionality: Ensure your Sengled Home app is updated to the latest version. If the app is unresponsive, try restarting your smartphone or reinstalling the app.
- Voice Assistant Problems: Confirm that your Sengled account is correctly linked to your Google Assistant. Check your internet connection and the status of your voice assistant device.
Specifications
| Feature | Specification |
|---|---|
| Brand | Sengled |
| Model Name | WiFi C-D DL (W31-N11DL) |
| Light Type | LED |
| Bulb Shape Size | A19 |
| Bulb Base | E26 |
| Wattage | 9 watts |
| Incandescent Equivalent Wattage | 60 Watts |
| Brightness | 800 Lumens |
| Light Color | 5000K Daylight |
| Color Rendering Index (CRI) | 90 |
| Beam Angle | 240 Degrees |
| Voltage | 120 Volts (100-120V, 60Hz) |
| Average Life | 25,000 Hours |
| Connectivity | 2.4GHz Wi-Fi (No Hub Required) |
| Control Method | Voice (Google Assistant), App & Remote Control |
| Product Dimensions | 2.42"W x 4.41"H |
| Material | Synthetic Polymer (PMMA) |
| Indoor/Outdoor Usage | Indoor |
Warranty & Support
Sengled provides a 3-year manufacturer's warranty for this product. For technical assistance or warranty claims, please contact Sengled customer service. Live customer service is available in the U.S.
For further support, visit the official Sengled website or refer to the contact information provided in your product packaging.





