1. Introduction
The SKYLINK MK-318-3 3-Button Keychain Transmitter is a compact and convenient remote control designed for operating up to three Skylink-brand garage doors. Its small size allows for easy transport with keys or in a pocket. This transmitter utilizes rolling code technology to enhance security by changing the access code after each use, preventing unauthorized access.
Key features include:
- Compatibility with Skylink ATOMS/ATOMS PRO garage door openers.
- Ability to operate up to three individual garage doors.
- Works with the Skylink GB-318 Garage Door Receiver (sold separately).
- Simple programming process.
- Optional passcode protection for enhanced security.
Image 1: Front view of the Skylink MK-318-3 3-Button Keychain Transmitter, showing its three black buttons and a red indicator light at the top, with a metallic key ring attachment at the bottom.
2. Setup
2.1 Battery Installation
The MK-318-3 transmitter comes with a pre-installed CR2032 3V lithium battery. If battery replacement is needed, follow these steps:
- Locate the battery compartment on the back of the transmitter.
- Use a small screwdriver or coin to gently pry open the compartment cover.
- Remove the old CR2032 battery.
- Insert a new CR2032 3V lithium battery with the positive (+) side facing up.
- Securely close the battery compartment cover.
2.2 Programming the Transmitter
The MK-318-3 is designed for easy programming with compatible Skylink garage door openers or receivers. The general programming procedure is as follows:
- Ensure your garage door opener or receiver (e.g., Skylink GB-318) is powered on.
- Locate the "Program" or "Learn" button on your garage door opener unit or receiver. The exact location may vary by model; refer to your opener's manual if unsure.
- Press and release the "Program" or "Learn" button on your garage door opener/receiver. An indicator light on the opener/receiver will typically illuminate or flash, indicating it is in programming mode.
- Within 30 seconds of pressing the program button, press and hold any one of the three buttons on your Skylink MK-318-3 keychain transmitter.
- Continue holding the transmitter button until the indicator light on your garage door opener/receiver changes (e.g., turns off, flashes rapidly, or illuminates steadily), signifying successful pairing.
- Release the button on the transmitter.
- Test the transmitter by pressing the programmed button. The garage door should activate.
Repeat this process for additional garage doors if you wish to program the other buttons on the transmitter to different openers.
3. Operating Instructions
Once programmed, operating the Skylink MK-318-3 transmitter is straightforward:
- Opening/Closing the Garage Door: Press the button on the transmitter that you have programmed to your garage door opener. The door will begin to open or close. Pressing the button again will stop the door's movement.
- Operating Range: The transmitter has a wide operating range of up to 100 feet, allowing you to activate your garage door from a considerable distance.
- Multiple Doors: If you have programmed multiple garage doors to different buttons, simply press the corresponding button for the desired door.
- Optional Passcode Protection: For enhanced security, the MK-318-3 offers optional passcode protection. Refer to the specific instructions provided with your Skylink garage door opener or receiver for details on how to enable and use this feature, which requires entering a passcode before the remote can be used.
4. Maintenance
The Skylink MK-318-3 Keychain Transmitter requires minimal maintenance. The primary maintenance task is battery replacement.
4.1 Battery Replacement
When the transmitter's operating range decreases significantly or the indicator light does not illuminate when a button is pressed, it is likely time to replace the battery. Refer to Section 2.1 "Battery Installation" for detailed instructions on replacing the CR2032 3V lithium battery.
4.2 Cleaning
To clean the transmitter, wipe it with a soft, dry cloth. Avoid using abrasive cleaners or solvents, as these can damage the casing or electronic components.
5. Troubleshooting
If you encounter issues with your Skylink MK-318-3 transmitter, consider the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Transmitter does not activate garage door. |
|
|
| Reduced operating range. |
|
|
| Indicator light on transmitter does not light up. | Dead battery. | Replace the CR2032 battery. |
If these steps do not resolve the issue, please contact Skylink customer support for further assistance.
6. Specifications
| Model Number | MK-318-3 |
| Manufacturer | Skylink Technologies Inc |
| Dimensions (L x W x H) | 2.5 x 1.25 x 0.5 inches |
| Item Weight | 0.493 ounces |
| Battery Type | CR2032 3V Lithium (included) |
| Operating Range | Up to 100 feet |
| Number of Buttons | 3 |
| Compatibility | Skylink ATOMS/ATOMS PRO garage door openers, Skylink GB-318 Garage Door Receiver |
7. Warranty and Support
Manufacturer Warranty: The Skylink MK-318-3 Keychain Transmitter is covered by a 1-year manufacturer warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
Customer Support: For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Skylink Technologies Inc. customer support. Refer to the product packaging or the official Skylink website for the most current contact information.
