1. Introduction
Thank you for choosing the Sealy Queen Size Heated Mattress Pad. This product is designed to provide warmth and comfort, featuring 10 heat settings, dual controllers for personalized comfort, and an automatic shut-off function for safety and energy efficiency. This manual provides essential information for the safe and effective use of your heated mattress pad.
2. Important Safety Information
Please read all instructions carefully before using this heated mattress pad. Failure to follow these instructions may result in fire, electric shock, or injury.
- ETL Certified: This product is ETL certified for quality and safety.
- Electrical Safety: Do not use with damaged cords or controllers. Ensure the power cord is not pinched or routed in a way that could cause damage.
- Moisture Warning: DO NOT PLUG IN AND POWER UP YOUR HEATED PRODUCT WHILE DAMP. DO NOT USE UNTIL IT IS COMPLETELY DRY.
- Usage Restrictions: Do not use with infants, children, incapacitated persons, or persons insensitive to heat. Do not use with adjustable beds unless specifically designed for such use.
- Care Instructions: DO NOT DRY CLEAN. DO NOT BLEACH. DO NOT IRON. Refer to the 'Care and Maintenance' section for proper cleaning.
- Storage: When not in use, store the mattress pad in a cool, dry place. Avoid placing heavy objects on the pad during storage.
3. Package Contents
- 1 x Sealy Queen Size Heated Mattress Pad
- 2 x Dual Controllers with Power Cords
4. Setup Instructions
- Unpack: Carefully remove the heated mattress pad and controllers from the packaging.
- Position Pad: Place the heated mattress pad directly on top of your mattress. Ensure it is spread evenly and smoothly. The 17-inch deep pocket skirt is designed to fit most mattresses securely.
- Connect Controllers: Locate the connection ports at the foot of the mattress pad. Firmly plug each controller's cord into its respective port on the mattress pad. Ensure a secure connection.
- Power Connection: Plug each controller's power cord into a separate 120V AC electrical outlet. For Queen, King, and California King sizes, two controllers are provided, each requiring its own outlet.

Image: Sealy Heated Mattress Pad on a bed with two controllers and product packaging. The pad is white and quilted, with two white controllers visible near the foot of the bed. A white product box is also on the bed.

Image: A woman in pajamas is shown pulling the elasticized skirt of the Sealy Heated Mattress Pad over the corner of a mattress, illustrating the 17-inch deep pocket design.
5. Operating Instructions
Your Sealy Heated Mattress Pad features user-friendly controls for optimal comfort.

Image: A close-up view of the white Sealy heated mattress pad controller with an LCD screen displaying 'H'. Labels point to features such as '10 heat setting', '1-12 hour auto off time setting', and 'time/heat setting with LCD screen'.
- Power On/Off: Press the red power button on the controller to turn the mattress pad on or off. The LCD screen will illuminate when on.
- Adjust Heat Settings: Use the '+' and '-' buttons to cycle through the 10 available heat settings (1-10). Start with a lower setting and adjust as needed for your comfort.
- Preheat Feature: The mattress pad includes a 20-minute preheat feature to warm your bed quickly. This activates automatically when turned on or can be manually selected.
- Set Auto Shut-Off Timer: Press the 'TIME' button to adjust the automatic shut-off timer from 1 to 12 hours. This feature provides peace of mind and conserves energy.
- Dual Control (Queen/King/Cal King): For Queen, King, and California King sizes, two independent controllers allow each side of the bed to be adjusted to a different heat setting and auto-off time.

Image: An overhead diagram of a mattress pad showing two distinct heating zones, one red and one yellow, each connected to a separate controller, illustrating the dual control functionality for Queen, King, and California King sizes.
6. Care and Maintenance
Proper care ensures the longevity and performance of your heated mattress pad.
- Before Washing: Always unplug the power cords from the wall outlets and detach the controllers from the mattress pad before washing.
- Machine Washable: The heated mattress pad is machine washable. Wash on a gentle cycle in water under 30°C (86°F).
- Drying: Tumble dry on low heat or air dry. Ensure the mattress pad is completely dry before reconnecting the controllers and plugging it back in.
- Do NOT: Dry clean, bleach, or iron the mattress pad. These actions can damage the heating elements and fabric.
- Water Repellent: The mattress pad features a water-repellent design, allowing for easy spot cleaning of spills by simply wiping them away.

Image: A hand wiping water droplets off the quilted, white surface of the Sealy Heated Mattress Pad, demonstrating its water-repellent property.

Image: A person is shown placing the white, quilted heated mattress pad into the drum of a washing machine, indicating it is machine washable.
7. Troubleshooting
If your heated mattress pad is not functioning as expected, please refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Mattress pad does not heat. | Power cord not securely plugged in. Controller not connected properly. Power outlet not functioning. | Ensure all connections are firm. Test the power outlet with another device. Press the power button on the controller. |
| One side of the mattress pad is not heating (Queen/King/Cal King). | Controller for that side is off or not connected. | Check the power and connection of the specific controller for that side. Ensure it is plugged into its own working outlet. |
| Controller display is not working. | Power issue or controller malfunction. | Unplug and re-plug the controller. If the issue persists, contact customer service. |
| Pad feels lumpy or wires are noticeable. | Incorrect placement or internal shifting. | Ensure the pad is spread smoothly on the mattress. The design aims to minimize wire sensation, but some perception may occur. |
If you experience any issues not listed here or if the problem persists after attempting the solutions, please contact Sealy customer service for further assistance.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Sealy |
| Model Name | Heated Mattress Pad |
| Model Number | KTHM-ATMF-Q / KTHM-QATMF-Q |
| Size | Queen (80 x 60 x 17 inches) |
| Material | Polyester |
| Fabric Type | Polyester |
| Heat Settings | 10 Levels |
| Auto Shut-Off | 1-12 Hours |
| Controller Type | Dual Controller (for Queen/King/Cal King) |
| Deep Pocket | Fits up to 17-inch mattresses |
| Water Resistance | Water Repellent |
| Special Features | Breathable, Corded, Skin Friendly, Soft, Washable |
| Certifications | ETL Certified |
| Item Weight | 8.09 pounds |
9. Warranty and Support
Your Sealy heated mattress pad comes with a quality guarantee. If you have any questions, concerns, or require assistance with your product, please do not hesitate to reach out to our customer service team. We are committed to providing support to ensure your satisfaction and a healthy, balanced life.
For customer service inquiries, please refer to the contact information provided with your purchase or visit the official Sealy website.