1. Product Overview
This manual provides instructions for the FD Universal Garage Door Remote Control, designed for compatibility with various DOORHAN systems. Featuring a HCS301 chip and rolling code technology, this 433MHz remote offers stable performance and increased transmission distance. It is typically used for controlling garage doors, gates, and other access barriers.

Figure 1: Four FD Universal Garage Door Remote Controls.
2. Specifications
| Feature | Detail |
|---|---|
| Brand Name | FD |
| Model | FD025 |
| Encoding Method | Rolling Code (HCS301 Chip) |
| Frequency | 433MHz |
| Number of Buttons | 4 |
| Certification | CE |
| Origin | Mainland China |
| Dimensions (Approx.) | Length: 10 cm, Width: 8 cm, Height: 4 cm |
| Weight (Approx.) | 0.2 kg |

Figure 2: Back view of the remote control, indicating "TRANSMITTER4 433MHz" and model "FD025".
3. Compatible Models
This remote control is designed to be compatible with a wide range of DOORHAN systems. Please ensure your existing system uses a 433MHz frequency and rolling code technology for proper functionality.
- DOORHAN TRANSMITTER 2
- DOORHAN TRANSMITTER 4
- DOORHAN TRANSMITTER -2 PRO
- DOORHAN TRANSMITTER -4 PRO
- DOORHAN Premium RC black 4
- And other compatible DOORHAN models.
4. Setup and Programming
The FD remote control is programmed directly with your DOORHAN receiver unit. The exact programming steps may vary slightly depending on your specific DOORHAN receiver model. Always refer to your DOORHAN receiver's manual for precise instructions. A general programming procedure is as follows:
- Locate the Receiver: Find the control unit for your garage door opener or gate. This unit typically has a "LEARN" or "CODE" button.
- Activate Learning Mode: Press and release the "LEARN" or "CODE" button on your DOORHAN receiver. An indicator light (LED) on the receiver should illuminate or flash, indicating it is in learning mode. This mode usually lasts for a few seconds.
- Program the Remote: While the receiver is in learning mode, press and hold the desired button on your new FD remote control that you wish to program. Keep the button pressed until the receiver's indicator light changes (e.g., flashes rapidly, turns off, or changes color), confirming successful programming.
- Test the Remote: Release the button on the remote. Wait a few seconds, then press the programmed button on the remote again to test its operation. Your garage door or gate should respond.
- Program Additional Buttons (if applicable): If your remote has multiple buttons and you wish to control different functions or doors, repeat steps 2 and 3 for each button, associating it with the desired function on your receiver.
Important: If the remote does not program successfully, ensure you are within range of the receiver and that the receiver is correctly powered. Some receivers may require a longer press on the "LEARN" button to enter programming mode.
5. Operating Instructions
Once programmed, operating your garage door or gate with the FD remote control is straightforward:
- To Open/Close: Press the programmed button on the remote control. The garage door or gate will activate. Pressing the button again will typically stop or reverse the operation, depending on your system's configuration.
- Range: For optimal performance, operate the remote within a reasonable distance from your receiver. Environmental factors can affect signal range.
6. Maintenance
To ensure the longevity and reliable operation of your remote control, follow these maintenance guidelines:
- Battery Replacement: The remote uses a durable battery. When the remote's range decreases significantly or the indicator light on the remote becomes dim or fails to light up, it's time to replace the battery.
- Carefully open the remote control casing (usually by prying it open with a small flat-head screwdriver at the seam).
- Note the type and orientation of the existing battery.
- Remove the old battery and insert a new one of the same type, ensuring correct polarity.
- Close the remote control casing securely.
- Cleaning: Wipe the remote with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Storage: Store the remote in a dry place, away from direct sunlight, extreme temperatures, and high humidity.
- Avoid Damage: Do not drop the remote or expose it to water.
7. Troubleshooting
If you encounter issues with your remote control, try the following troubleshooting steps:
- Remote Not Working:
- Check the battery. Replace it if it's old or depleted.
- Ensure the remote is properly programmed to your receiver. Re-attempt the programming steps (Section 4).
- Verify that your DOORHAN receiver is powered on and functioning correctly.
- Reduced Operating Range:
- Replace the battery in the remote control.
- Check for sources of interference (e.g., other wireless devices, metal objects) near the receiver or remote.
- Ensure there are no obstructions between the remote and the receiver.
- Remote Programs but Doesn't Operate:
- Confirm that the remote's frequency (433MHz) matches your receiver's frequency.
- Ensure the remote's encoding method (rolling code) is compatible with your receiver.
- Some receivers have a limit on the number of remotes that can be programmed. If you have many remotes, you might need to clear the receiver's memory and reprogram all desired remotes.
8. User Tips
- Verify Compatibility: Before purchasing or programming, always confirm that your existing DOORHAN system operates on a 433MHz frequency and uses rolling code technology. This remote is specifically designed for DOORHAN systems.
- Keep a Spare: It's advisable to have a spare remote control programmed and stored safely in case your primary remote is lost or damaged.
- Receiver Manual: For advanced troubleshooting or specific receiver settings, always consult the original instruction manual for your DOORHAN garage door or gate opener receiver.
9. Warranty and Support
This FD remote control is manufactured to high-quality standards. While specific warranty details may vary by retailer, a typical warranty period for electronic accessories is one year from the date of purchase, covering manufacturing defects. For technical support or warranty claims, please contact your point of purchase or the manufacturer directly.
In case of product issues, please retain your proof of purchase. For any questions regarding compatibility or programming, refer to the information provided in this manual or seek assistance from a qualified technician.