1. Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your MLILY NL300U Adjustable Bed Base Frame. Please read this manual thoroughly before use to ensure proper function and safety.
The MLILY NL300U is designed to enhance your sleep experience with features such as independent head and foot incline, a wireless remote, Bluetooth app control, USB charging ports, and a 3-mode massage function. Its robust alloy steel construction ensures durability and stability.

Image: Overview of the MLILY NL300U Adjustable Bed Base Frame highlighting key features.

Image: Detailed list of features for the NL300U adjustable bed base.
2. Safety Information
- Weight Capacity: The bed base is designed to support a maximum weight of 850 pounds, including the mattress and occupants. Exceeding this limit may cause injury or damage to the product.
- Moving Parts: Keep hands, feet, and pets clear of all moving parts during operation to prevent injury.
- Children and Pets: Do not allow children or pets to operate the bed base without adult supervision.
- Electrical Safety: Ensure the power cord is properly connected and not pinched or damaged. Do not operate the bed base if the cord or plug is damaged.
- Cleaning: Disconnect the power before cleaning the bed base. Use a damp cloth and mild detergent; avoid harsh chemicals.
- Medical Devices: Consult your physician before using this product if you have a pacemaker or similar medical device, as the massage function may interfere with its operation.
3. Package Contents
Verify that all components are present before beginning assembly:
- Adjustable Bed Base Frame
- Wireless Remote Control
- Power Cord and Adapter
- Legs (quantity varies by size)
- Mattress Retainer Bar
- User Manual (this document)
4. Setup and Assembly
The MLILY NL300U adjustable bed base is designed for quick and easy assembly, typically taking less than 5 minutes from unboxing to readiness. No tools are required.
- Unfold the Base: Carefully remove the bed base from its packaging. Unfold the base on a flat, clear surface.
- Screw in the Legs: Attach the provided legs by screwing them into the designated threaded holes on the underside of the frame. Ensure they are tightened securely. The legs are 3-in-1 adjustable (5" + 7").
- Insert Mattress Retainer Bar: Place the mattress retainer bar into the slots at the foot of the bed base. This prevents the mattress from sliding during adjustments.
- Plug in the Power: Connect the power cord to the bed base and then plug it into a grounded electrical outlet.

Image: Visual guide for the 4-step assembly process.
The unique foldable design of the base also makes it convenient for transport and moving.

Image: The foldable design allows for convenient transport.
The NL Series adjustable bases are designed to be used with or without their adjustable legs, offering a zero-clearance design that allows placement directly on a platform. This provides flexibility to select your preferred bed frame, including platform beds with storage drawers underneath.

Image: Platform-friendly design for versatile bed frame compatibility.
5. Operating Instructions
5.1 Wireless Remote Control
The NL300U comes with a wireless remote control for easy adjustment of your bed base. Ensure the remote has working batteries.

Image: Wireless remote control for the adjustable bed base.
- Head Incline: Use the dedicated buttons to raise or lower the head section (0-60 degrees).
- Foot Incline: Use the dedicated buttons to raise or lower the foot section (0-45 degrees).
- One-Touch Flat: Press the "Flat" button to return the bed to a completely flat position.
- Preset Positions:
- TV Position: Adjusts the head and foot to an optimal position for watching television.
- Zero Gravity: Elevates the head and feet to a position that mimics weightlessness, reducing pressure on the back.
- Anti-Snore: Slightly raises the head to help open airways and reduce snoring.
- Programmable Memory Positions: The remote allows you to save two custom positions. Adjust the bed to your desired position, then press and hold a memory button (e.g., M1 or M2) until the remote beeps or flashes to save.
- Flashlight: The remote includes a built-in flashlight for convenience.

Image: Demonstrating various bed positions: Watch TV, Flat, Anti Snore, Zero Gravity.
5.2 Massage Function
The NL300U features a head and foot massage function with three levels of intensity and three modes.
- Activate Massage: Use the massage buttons on the wireless remote to turn the massage function on/off.
- Adjust Intensity: Cycle through the three intensity levels using the appropriate button.
- Select Mode: Choose from three different massage modes to suit your preference.

Image: User enjoying the head and foot massage function.
5.3 USB Charging Ports
The bed base includes integrated USB charging ports, typically located on the side of the frame, allowing you to conveniently charge your electronic devices.
5.4 Bluetooth App Control
Control your adjustable bed using your smartphone via the MLILY Control app. This feature allows for convenient operation from anywhere within Bluetooth range.
- Download App: Download the "MLILY Control" app from your smartphone's app store.
- Pair Device: Open the app and follow the on-screen instructions to pair your smartphone with the bed base via Bluetooth. You may need to select "More" and then "Enter the device controller interface" to find your bed base.
- Control Functions: Once paired, you can control all bed base functions, including head/foot incline, massage, and preset positions, directly from your phone.
- Settings: The app allows you to change the device name, icon, and restore default settings.

Image: MLILY Control App

Image: App device selection

Image: App control interface

Image: App settings
6. Maintenance
- Cleaning: Disconnect the power cord before cleaning. Use a soft, damp cloth and a mild detergent to clean the frame. Avoid abrasive cleaners or solvents.
- Inspections: Periodically check all connections and fasteners to ensure they are secure. Do not overtighten.
- Power Cord: Inspect the power cord for any signs of damage. If damaged, contact customer support for a replacement.
- Lubrication: The moving parts of the bed base are designed to be maintenance-free and do not require lubrication.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bed does not operate. | No power supply. Remote control batteries are dead. | Ensure the power cord is securely plugged into a working outlet. Check the circuit breaker. Replace batteries in the remote control. |
| Remote control not responding. | Remote not paired. Obstruction between remote and receiver. | Refer to the remote control pairing instructions (if applicable, usually in a separate guide or app). Remove any objects blocking the signal path. |
| Motor runs but bed does not move. | Mechanism jammed. Overload protection activated. | Check for any obstructions under the bed base. Reduce weight on the bed. Unplug for 30 minutes to reset overload protection. |
| Massage function not working. | Power issue. Motor malfunction. | Ensure the bed base has power. If other functions work, contact customer support. |
If you encounter issues not listed here or if the suggested solutions do not resolve the problem, please contact MLILY customer support.
8. Specifications
| Model | NL300U |
| Size | Twin XL |
| Material | Alloy Steel |
| Product Dimensions (L x W x H) | 80" x 38" x 12" |
| Item Weight | 119 Pounds |
| Maximum Weight Recommendation | 850 Pounds |
| Head Incline Range | 0-60 degrees |
| Foot Incline Range | 0-45 degrees |
| Massage Modes | 3 modes, 3 intensity levels |
| Connectivity | Wireless Remote, Bluetooth App Control |
| Additional Features | USB Charging Ports, One-Touch Flat, Preset Positions (TV, Zero Gravity, Anti-Snore), 2 Programmable Memory Positions, Flashlight on Remote, Foldable Design, 3-in-1 Adjustable Legs |
| UPC | 810037119701 |
| ASIN | B09T779X5F |
9. Warranty Information
MLILY provides the following limited warranty for the NL300U Adjustable Bed Base Frame:
- Frame: 10-year limited warranty.
- Electrical Components: 2-year limited warranty for electrical components such as motors, control boxes, and remote control.
For detailed warranty terms and conditions, please refer to the warranty card included with your product or visit the official MLILY website.
10. Customer Support
If you have any questions, require assistance with assembly, operation, or troubleshooting, or need to make a warranty claim, please contact MLILY customer support.
- Manufacturer: MLILY
- Website: Visit the MLILY Store on Amazon (for general information)
- For direct support, please refer to the contact information provided in your product packaging or on the official MLILY website.