1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your DOORHAN TRANSMITTER - 2 PRO / TRANSMITTER4 wireless remote control. This device is designed for convenient and secure operation of DOORHAN gate and garage door openers, utilizing a 433MHz rolling code frequency for enhanced security.
The remote control is available in 2-button and 4-button configurations and is compatible with all DOORHAN models, including TRANSMITTER 2, TRANSMITTER 4, TRANSMITTER -2 PRO, TRANSMITTER -4 PRO, and Premium RC black 4.
Image: DOORHAN Remote Controls (2-button and 4-button versions) with 433MHz frequency and included battery.
2. Package Contents
Please check the package carefully to ensure all items are present:
- 1x Remote Control (Battery included)
- 1x English Manual (Quick Guide)
- 1x Lanyard
- 1x Backup Battery
- 1x Blister Box (packaging)
Image: Package contents including remote, quick guide, lanyard, and backup battery.
3. Specifications
| Feature | Specification |
|---|---|
| Number of Channels | 2 or 4 |
| Frequency | 433MHz / 433.92MHz |
| Programming Type | Programming with Receiver |
| Code | Rolling Code |
| Working Range | 30-150 meters (depending on environment) |
| Compatibility | All DOORHAN models |
| Certification | CE |
| Dimensions (approx.) | 54mm x 33mm x 10mm |
Image: Dimensions and key specifications of the remote control.
4. Setup (Programming)
To program your new DOORHAN remote control, you will need to pair it with your gate or garage door opener's receiver. The programming procedure is similar to that of original DOORHAN Transmitter 4 remotes. Always refer to your receiver's user manual for specific instructions, as procedures may vary slightly between models. For a typical DOORHAN Garage Control Panel, follow these steps:
- Press and release the button 'R' on the receiver.
- The left side of the display panel on the receiver will show '0' and then disappear immediately.
- Press any button on your new remote control twice. Coding is now completed.
- Press the transmitter button again to test operation. The gate or garage door should respond.
Note:
- To remove a single transmitter's code or all transmitter codes from the receiver memory, please refer to your receiver manual.
- Ensure you are within range of the receiver during the programming process.
Image: DOORHAN remote controls, compatible with various models.
5. Operating Instructions
Once programmed, operating your DOORHAN remote control is straightforward:
- Activation: Press the desired button on the remote control to activate your gate or garage door opener.
- Range: The remote operates within a range of 30-150 meters, depending on environmental conditions and obstacles.
- Multiple Devices: If you have a 4-button remote and multiple DOORHAN devices (e.g., two garage doors, a gate, and an alarm), you can program each button to control a different device.
Image: Close-up of the 4-button remote control.
6. Maintenance
Battery Replacement
The remote control uses a standard coin cell battery (typically CR2032). When the remote's range decreases significantly or it stops responding, it's likely time to replace the battery.
- Carefully open the remote control casing. This may require a small screwdriver or prying tool.
- Remove the old battery, noting its orientation (positive (+) side up).
- Insert the new CR2032 battery with the positive (+) side facing up.
- Close the remote control casing securely.
General Care
- Keep the remote control dry and away from extreme temperatures.
- Avoid dropping the remote control or subjecting it to strong impacts.
- Clean the remote with a soft, dry cloth if necessary. Do not use harsh chemicals.
7. Troubleshooting
- Remote not working after programming:
- Ensure the remote's battery is fresh and correctly installed.
- Repeat the programming steps carefully, ensuring the receiver acknowledges the remote.
- Check your receiver's manual for any specific programming nuances or error codes.
- Reduced operating range:
- Replace the remote control battery.
- Check for any new sources of radio interference near your gate/garage door opener.
- Ensure there are no new large metallic objects obstructing the signal path.
- Remote works intermittently:
- This often indicates a low battery. Replace it.
- Check for loose connections inside the remote if you have opened it previously.
8. User Tips
No specific user tips were available from customer reviews or Q&A for this product. However, general tips for remote controls include:
- Keep a spare battery on hand for quick replacement.
- Store the remote in a consistent, easily accessible location (e.g., car visor clip, key chain) to avoid misplacing it.
- If you have multiple remotes, label them to easily identify which controls which device.
9. Warranty and Support
For any issues or support inquiries regarding your DOORHAN remote control, please contact the seller or manufacturer directly. Keep your purchase records handy as they may be required for warranty claims or technical assistance.
This product is manufactured by Shenzhen Sarik Technology Co.,Ltd.





