1. Introduction
This manual provides instructions for the Linear MCT-3 Megacode 3-Channel Remote Control, model DNT00089. This remote is designed for use with Linear's Mega Code series of receivers, commonly found in garage door openers and automatic gate systems. It allows for the control of up to three separate devices.
The Linear MCT-3 remote transmits a unique code for each of its three buttons. This enables control of multiple devices, such as a garage door opener, an access gate, and an additional garage door operator, all from a single remote.

Image 1.1: Comparison showing the Linear DNT00093 (left) and DNT00089 (right) remote controls. The DNT00093 is a replacement for the DNT00089, indicating functional equivalence.
2. Product Features
- Three-Channel Operation: Controls up to three separate Linear Mega Code compatible devices.
- Mega Code Technology: Utilizes secure, encrypted radio frequency transmission.
- Visor Clip Design: Easily attaches to a vehicle's sun visor for convenient access.
- Compact and Durable: Designed for everyday use.
- Easy Programming: Simple "Learn" button programming with compatible receivers.

Image 2.1: Front view of the Linear MCT-3 Megacode 3-Channel Remote Control, showing its three distinct buttons.
3. Setup and Programming
To program your Linear MCT-3 remote control, follow these steps. Ensure you are near your garage door opener or gate receiver during this process.
- Locate the Receiver's Learn Button: On your garage door opener or gate receiver, find the "Learn" button. The location of this button varies by model, but it is typically on the motor unit itself. Refer to your opener's manual if you cannot locate it.
- Activate Learn Mode: Press and release the "Learn" button on your receiver. The indicator light on the receiver will typically illuminate or flash, indicating it is in programming mode. You usually have about 30 seconds to complete the next step.
- Program the Remote: While the receiver is in learn mode, press and hold the desired button on your Linear MCT-3 remote control that you wish to use for this device.
- Confirm Programming: Release the remote button once the receiver's indicator light changes (e.g., turns off, flashes rapidly, or the garage door/gate moves slightly). This confirms successful programming.
- Test Operation: Press the programmed button on your remote control to ensure it activates the garage door or gate.
Note: If you wish to program additional buttons on the remote for other devices, repeat steps 2-5 for each device, selecting a different button on the remote each time.
4. Operation
Once programmed, operating your Linear MCT-3 remote control is straightforward:
- Activate Device: Press the corresponding button on the remote control that has been programmed to your garage door opener or gate.
- Range: For optimal performance, ensure you are within a reasonable operating range of your receiver. Environmental factors can affect signal range.
5. Maintenance: Battery Replacement
The Linear MCT-3 remote control requires one 9V battery. If the remote's indicator light does not illuminate when a button is pressed, or if the range significantly decreases, the battery may need replacement.
- Open the Remote Casing: Locate the battery compartment cover on the back of the remote. This may require a small screwdriver or prying tool to open carefully.
- Remove Old Battery: Carefully remove the old 9V battery from its terminals.
- Insert New Battery: Insert a new 9V alkaline battery, ensuring the positive (+) and negative (-) terminals are correctly aligned.
- Close Casing: Replace the battery compartment cover, ensuring it is securely fastened.
- Test: Test the remote's operation with your programmed device.
Disposal: Please dispose of old batteries responsibly according to local regulations.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Remote does not activate device. |
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| Reduced operating range. |
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| Indicator light on remote does not illuminate. |
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7. Specifications
| Feature | Detail |
|---|---|
| Model Number | MCT-3 DNT00089 (Replaced by DNT00093) |
| Brand | Linear |
| Number of Channels | 3 |
| Connectivity Technology | Radio Frequency (Mega Code) |
| Compatible Devices | Linear Mega Code Receivers |
| Power Source | 1 x 9V Battery |
| Product Dimensions | Approximately 2 x 1 x 1 inches |
| Item Weight | Approximately 0.141 ounces |
8. Warranty and Support
For specific warranty information and technical support regarding your Linear MCT-3 Megacode 3-Channel Remote Control, please refer to the documentation provided with your purchase or contact Linear directly through their official website. Keep your proof of purchase for warranty claims.
For further assistance, you may visit the Linear website (example link, actual link may vary).







