USARMT 3621-RC280V4-ONN
Universal Remote Replacement for TCL/ONN Roku TVs
Model: 3621-RC280V4-ONN
Product Overview
This universal remote control is designed as a direct replacement for TCL Roku and ONN Roku TV models. It provides seamless control over your television without the need for complex programming or setup. Simply insert batteries, and the remote is ready for use.

Figure 1: Front and side view of the USARMT Universal Remote.
The remote features dedicated buttons for popular streaming services such as Netflix, Sling, Hulu, and Vudu, allowing for quick access to your favorite content. Its ergonomic design ensures comfortable handling, and the buttons are engineered for durability, supporting over 120,000 clicks.
Important Compatibility Note:
- This remote is NOT compatible with Roku Stick, Roku Streaming Stick, Roku Box 1/2/3/4 (HD/LT/XS/XD), Roku Ultra, Roku Express, or Roku Player devices.
- It is specifically designed for TCL Roku and ONN Roku TV models.
Setup
The USARMT universal remote is preprogrammed and does not require any manual setup or pairing with your TV. Follow these simple steps to begin using your remote:
- Open the Battery Compartment: Locate the battery compartment cover on the back of the remote control. Gently slide or press down and slide the cover to open it.
- Insert Batteries: Insert two (2) AAA batteries (not included) into the compartment, ensuring the positive (+) and negative (-) terminals align correctly with the indicators inside the compartment.
- Close the Battery Compartment: Replace the battery compartment cover by sliding it back into place until it clicks securely.
- Ready for Use: The remote is now ready to operate your compatible TCL Roku or ONN Roku TV. Point the remote towards your TV and press any button to test its functionality.

Figure 2: Side profile of the remote, indicating where the battery compartment is typically located on the back.
Operating Instructions
This remote control offers intuitive navigation and quick access to various functions of your Roku TV. Familiarize yourself with the button layout and their corresponding actions:
| Button | Function |
|---|---|
| Power (⏻) | Turns the TV On or Off. |
| Home (⌂) | Returns to the Roku TV Home screen. |
| Back (←) | Goes back to the previous screen or menu. |
| Navigation Pad (Up, Down, Left, Right) | Navigates through menus and content. |
| OK | Selects an item or confirms an action. |
| Volume Up/Down | Adjusts the TV volume. |
| Mute | Mutes or unmutes the TV audio. |
| Instant Replay (↻) | Replays the last few seconds of video. |
| Asterisk/Options (*) | Accesses additional options or settings within an app or menu. |
| Rewind (⏪) | Rewinds video playback. |
| Play/Pause (⏯) | Plays or pauses video content. |
| Fast Forward (⏩) | Fast forwards video playback. |
| Netflix, Sling, Hulu, Vudu | Directly launches the corresponding streaming application. |
For optimal performance, ensure a clear line of sight between the remote control and your TV's infrared receiver. The remote is designed to provide a transmitting distance of over 25 feet with a quick response time of 0.3 seconds.
Maintenance
Proper care and maintenance will extend the life of your remote control.
- Cleaning: Use a soft, dry cloth to clean the surface of the remote. For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner. Avoid using harsh chemicals or abrasive materials, as they can damage the remote's finish or internal components.
- Battery Replacement: Replace batteries when the remote's performance degrades (e.g., reduced range, unresponsive buttons). Always replace both batteries at the same time with new ones of the same type (AAA). Do not mix old and new batteries, or different types of batteries.
- Storage: When not in use for extended periods, it is recommended to remove the batteries to prevent leakage, which can damage the remote. Store the remote in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid Drops and Impacts: While durable, excessive force or dropping the remote can cause internal damage. Handle with care.
Troubleshooting
If you experience issues with your remote control, please refer to the following common troubleshooting steps:
- Remote Not Responding:
- Check Batteries: Ensure batteries are inserted correctly with the correct polarity (+/-). Replace old or depleted batteries with fresh AAA batteries.
- Line of Sight: Make sure there are no obstructions between the remote's infrared emitter and the TV's IR receiver. Point the remote directly at the TV.
- TV Power: Confirm that your TV is powered on and not in standby mode.
- Buttons Unresponsive or Delayed:
- Battery Level: Low battery power can cause intermittent or delayed responses. Replace batteries.
- Interference: Strong light sources (like direct sunlight or certain types of lighting) can interfere with the IR signal. Try operating the remote in different lighting conditions.
- Clean Remote: Ensure buttons are not stuck or obstructed by dirt. Refer to the Maintenance section for cleaning instructions.
- Remote Range Issues:
- Battery Strength: Weak batteries can reduce the effective range. Replace them.
- Obstructions: Ensure no furniture or objects are blocking the signal path between the remote and the TV.
- Remote Not Controlling Roku Device (e.g., Roku Stick, Box):
- This remote is specifically designed for TCL Roku and ONN Roku TVs. It is not compatible with standalone Roku streaming devices (Sticks, Boxes, Players, etc.). Please verify your device type.
If the issue persists after trying these steps, please contact the manufacturer or seller for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | USARMT |
| Model Number | 3621-RC280V4-ONN |
| Product Dimensions | 6 x 1.5 x 0.5 inches (approximately) |
| Item Weight | 2 ounces |
| Connectivity Technology | Infrared (IR) |
| Max Number of Supported Devices | 1 (One TV) |
| Compatible Devices | TCL Roku TVs, ONN Roku TVs |
| Special Feature | Ergonomic Design |
| Power Source | 2 x AAA Batteries (not included) |
| Transmitting Distance | Over 25 feet |
| Response Time | 0.3 seconds |
| Button Durability | Tested for over 120,000 clicks |
Warranty and Support
Specific warranty details for this product are not provided in the available information. For any warranty claims, technical support, or further inquiries regarding your USARMT universal remote control, please contact the seller or the manufacturer directly through their official channels.
Please retain your proof of purchase for any warranty-related requests.
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