1. Introduction
This manual provides comprehensive instructions for the Avisontek 893MAX universal garage door opener remote. This remote is designed to operate various garage door openers from LiftMaster, Chamberlain, and Craftsman, offering a convenient solution for accessing your garage. Please read these instructions carefully before use to ensure proper setup and operation.
2. Package Contents
The Avisontek 893MAX package includes the following items:
- 2 x Avisontek Universal Garage Door Opener Remotes
- 2 x Pre-installed CR2032 Batteries
- 2 x Visor Clips
- 1 x Detailed User Guide (this manual)
3. Compatibility
The Avisontek 893MAX remote is compatible with most LiftMaster, Chamberlain, and Sears Craftsman garage door openers manufactured since 1993. Compatibility is determined by the color of the "Learn Button" on your garage door opener unit.
Compatible Learn Button Colors:
- Purple Learn Button (2011-Present)
- Red/Orange Learn Button (2005-2014)
- Yellow Learn Button (1997-2005)
- Green Learn Button (1993-1997)
Important Note: This remote is NOT compatible with Security+ 3.0 white learn buttons (produced in 2026 or later) or garage door openers that use DIP switches for programming.

4. Setup and Programming
Follow these steps to program your Avisontek 893MAX remote to your garage door opener:
- Locate the Learn Button: Find the "Learn Button" on your garage door opener unit. Note its color. This button is usually located on the back or side panel of the motor unit.
- Activate Remote Programming Mode: On the Avisontek remote, use the visor clip or a small pointed object to press the PROG button located on the back of the remote. The LED light on the remote will turn on, indicating it's in programming mode.
- Select Remote Button: Choose the button on the remote (1, 2, or 3) you wish to program. Press this button a specific number of times based on the color of your opener's learn button:
- Purple Learn Button: Press 1 time
- Red/Orange Learn Button: Press 2 times
- Yellow Learn Button: Press 3 times
- Green Learn Button: Press 4 times
- Initiate Opener Learning: On your garage door opener unit, press and immediately release the "Learn Button". The Learn LED on the opener will glow steadily for 30 seconds, indicating it is ready to receive a signal.
- Sync Remote with Opener: Within 30 seconds of pressing the opener's Learn Button, press and hold the same button on your Avisontek remote that you selected in Step 3. Release the remote button when you hear 2 clicks from the opener, or when the garage door moves. This indicates successful programming.

5. Operating Instructions
Once programmed, operating your garage door opener with the Avisontek 893MAX remote is simple:
- Press the programmed button on the remote to open or close your garage door.
- The remote offers an effective operating range of up to 164 feet (50 meters).
- The remote utilizes rolling code technology for enhanced security, changing the access code with each use to prevent unauthorized access.

6. Maintenance
6.1 Battery Replacement
The Avisontek 893MAX remote uses a CR2032 lithium battery. When the remote's range decreases or the LED indicator light becomes dim, it's time to replace the battery.
- Locate the battery compartment on the back of the remote.
- Use a small screwdriver or coin to gently pry open the compartment.
- Remove the old CR2032 battery.
- Insert a new CR2032 battery with the positive (+) side facing up.
- Close the battery compartment securely.

6.2 Cleaning
Wipe the remote with a soft, dry cloth. Do not use abrasive cleaners or solvents.
7. Troubleshooting
If you encounter issues with your Avisontek 893MAX remote, refer to the following solutions:
| Problem | Possible Cause / Solution |
|---|---|
| Remote does not sync with opener. |
|
| Remote range is reduced or inconsistent. |
|
| Remote LED does not light up. |
|

8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 893MAX |
| Working Range | Up to 164 feet (50 meters) |
| Frequency | 310/315/390 MHz |
| Channels | 3 |
| Battery Type | 2 x CR2032 Lithium (included) |
| Shell Material | ABS Alloy |
| Product Dimensions | 3.18 x 1.77 x 0.6 inches (8.08 x 4.5 x 1.52 cm) |
| Product Weight | 0.096 lbs (43.5 g) |
| Color | Black |
| Security Feature | Rolling Code Encryption |
| Certifications | FCC Certified |

9. Warranty and Support
Avisontek provides a 3-Year Warranty for this product, ensuring long-lasting endurance and reliable performance. For any questions, technical assistance, or warranty claims, please contact Avisontek customer support.
Customer assistance is available to provide professional replies within 24 hours.

10. Safety Information
- Keep the remote control out of reach of children.
- Do not allow children to operate the garage door opener.
- Only operate the garage door when it is in full view and free of obstructions.
- Do not attempt to repair the remote control yourself. Refer to qualified personnel for service.
- Dispose of batteries properly according to local regulations.