Introduction
This manual provides essential information for the safe and effective use of your Sealy Heated Mattress Pad. Please read all instructions carefully before use and retain this manual for future reference.
The Sealy Heated Mattress Pad is designed to provide warmth and comfort, featuring zone heating, a dual controller with multiple heat settings, and an auto shut-off function for enhanced safety and convenience. It is constructed with premium, breathable materials and designed for easy maintenance.

Image: Sealy Heated Mattress Pad, Queen size, shown on a bed with its dual controllers and packaging box. The mattress pad is white and quilted.
Safety Information
IMPORTANT SAFETY INSTRUCTIONS. DO NOT DESTROY.
When using electrical appliances, basic precautions should always be followed to reduce the risk of fire, electric shock, and injury to persons, including the following:
- Read all instructions before using this heated mattress pad.
- Do not use with infants, invalids, or anyone insensitive to heat.
- Do not use with a damaged cord or plug. If the cord or plug is damaged, do not attempt to repair it yourself. Contact customer support.
- Do not use with pointed or sharp objects.
- Do not use if wet.
- Ensure the mattress pad is properly secured to the mattress to prevent shifting.
- Unplug the mattress pad from the outlet when not in use.
- This product is equipped with overheat protection for your safety.
- The Sealy Heated Mattress Pad is 100% ETL certified and features ultra-low electromagnetic field (EMF) emission. It also holds OEKO-TEX certification, ensuring textiles are free from harmful substances.

Image: A person sleeping peacefully on a bed, illustrating the comfort and safety of the Sealy Heated Mattress Pad. The image highlights the "100% ETL SAFETY CERTIFIED" and "low electro magnetic field emission (EMF)" features.

Image: The Sealy Heated Mattress Pad fitted onto a mattress, demonstrating its 17-inch deep pocket and 360-degree elastic fit. The OEKO-TEX Standard 100 certification logo is prominently displayed, indicating the product is tested for harmful substances.
Product Features
- Premium Quality Material: Constructed with an upgraded 3-layer thickened design, featuring skin-friendly, premium knitted breathable matelasse made of 100% polyester. The top layer has a soft quilted design for enhanced comfort.
- Dual Controller (Queen/King/Cal. King sizes): Equipped with two independent controllers for separate heat zones, allowing each user to customize their side of the bed. Twin/Full sizes come with a single controller.
- 10 Heat Settings: Offers a range of 10 heat settings (87-126°F) to find the ideal warmth level.
- 1-12 Hour Auto Shut-Off: Features a programmable timer for automatic shut-off, enhancing safety and energy efficiency.
- Pre-Heat Program & Setting Memory: The mattress pad includes a pre-heat function and remembers your last heat setting.
- Deep Pocket Design: A 17-inch deep and 360° all-around elastic pocket ensures the mattress pad fits most types of beds securely.
- Even Heat Distribution: Designed with evenly distributed heating wires (3 inches apart) to provide consistent warmth across the entire surface.

Image: An exploded view diagram illustrating the 3-layer protection of the Sealy Heated Mattress Pad, highlighting the skin-friendly breathable matelasse, silk-like cotton fillings, and noiseless durable matelasse layers.

Image: A hand gently touching the surface of the Sealy Heated Mattress Pad, emphasizing its soft, knitted design and ease of care.

Image: A visual comparison demonstrating Sealy's evenly distributed heating wire configuration (3 inches apart) for consistent warmth, contrasted with an example of uneven heating wire patterns found in other products.
Setup and Installation
- Unpack: Carefully remove the heated mattress pad from its packaging.
- Position: Lay the mattress pad flat on your mattress, ensuring it is centered and aligned.
- Secure: The 17-inch deep pocket with 360° all-around elastic helps secure the pad to your mattress. Stretch the elasticized skirt over the corners and sides of your mattress, ensuring a snug fit.
- Connect Controllers: Locate the connectors on the mattress pad and the corresponding plugs on the controller(s). Firmly push the plugs into the connectors until they click into place. Ensure a secure connection.
- Plug In: Plug the power cord(s) from the controller(s) into a standard 120V AC electrical outlet. Ensure the outlet is easily accessible. The power cord is 6 ft long and the controller cord is 13 ft long.

Image: A close-up of hands fitting the elastic deep pocket of the Sealy Heated Mattress Pad over the corner of a mattress, demonstrating its secure fit.
Operating Instructions
Your Sealy Heated Mattress Pad features an easy-to-use controller for personalized comfort.

Image: A detailed view of the Sealy Heated Mattress Pad controller, highlighting its features: heavy-duty insulated power cord, 10 heat settings, 1-12 hour auto-off time setting, and time/heat setting with an LCD screen. Additional benefits like overheat protection, energy saving, pre-heat programming, setting memory, and even heat distribution are listed.
Using the Controller:
- Power On/Off: Press the power button (usually red or clearly marked) to turn the mattress pad on or off. The LCD screen will illuminate.
- Adjust Heat Setting: Use the "+" and "-" buttons (or similar controls) to cycle through the 10 available heat settings. The current heat level will be displayed on the LCD screen.
- Set Auto Shut-Off Timer: Press the timer button (often labeled "TIME" or with a clock icon) to adjust the auto shut-off duration from 1 to 12 hours. Each press will cycle through the available hours.
- Pre-Heat Function: The mattress pad has a pre-heat program. When turned on, it may quickly reach a comfortable temperature before settling into your selected setting.
- Setting Memory: The controller will remember your last used heat and timer settings for convenience.
For Queen, King, and California King sizes, each side of the bed has an independent controller, allowing for personalized warmth zones.

Image: An overhead view of two individuals in bed, illustrating the dual controller functionality of the Sealy Heated Mattress Pad. Each side of the bed shows a distinct heated zone, allowing for individual temperature preferences. A graph depicts the rapid heating capability of the pad.
Maintenance
Proper care will extend the life of your Sealy Heated Mattress Pad.
Cleaning Instructions:
The Sealy Heated Mattress Pad is machine washable for easy care.
- Disconnect: Before washing, always unplug the power cord from the wall outlet and disconnect the controller(s) from the mattress pad.
- Pre-Soak (Optional): For best results, you may pre-soak the mattress pad in cool water with a mild detergent for 15 minutes.
- Machine Wash: Wash on a gentle cycle in a washing machine with cool water and a small amount of mild detergent. Do not bleach.
- Rinse: Rinse thoroughly on a slow spin cycle.
- Machine Dry: Tumble dry on low heat. Ensure the mattress pad is completely dry before reconnecting the controllers and plugging it back in. Do not iron.
- Air Dry: Alternatively, you can air dry the mattress pad by hanging it over a clothesline or shower rod. Do not wring or twist.
WARNING: Do not dry clean. Dry cleaning solvents may damage the insulation of the heating elements.

Image: A person placing the Sealy Heated Mattress Pad into a washing machine, illustrating its machine washable feature. A reminder to unplug the power connection before washing is included.
Troubleshooting
If you experience issues with your Sealy Heated Mattress Pad, please refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Mattress pad does not heat. |
|
|
| Uneven heating. |
|
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| Controller display is off or flashing. |
|
|
Specifications
- Brand: Sealy
- Model Name: Heated Mattress Pad
- Item Model Number: KTHM-ATMT-Q
- Size: Queen (80 x 60 x 17 inches)
- Color: White
- Fabric Type: 100% Polyester
- Material: Premium Matelasse
- Thread Count: 260
- Special Features: Breathable, Knitted Top, Skin Friendly, Soft, Washable, Dual Controller (for Queen/King/Cal. King), 10 Heat Settings, 1-12 Hour Auto Shut-Off, Overheat Protection, Low EMF.
- Product Care Instructions: Machine Washable
- Item Weight: 9.18 pounds
- Manufacturer: KATA
- Date First Available: April 28, 2022

Image: A diagram illustrating the dimensions for various mattress pad sizes: Twin (39"x75"), Full (54"x75"), Queen (60"x80"), King (78"x80"), and Cal King (72"x84").
Warranty and Support
Sealy stands by the quality of its products. The Sealy Heated Mattress Pad comes with a quality guarantee.
If you have any questions, concerns, or require assistance with your heated mattress pad, please do not hesitate to reach out to Sealy customer support. Providing the best support for your healthy and balanced life is our honor.
For further assistance, please refer to the contact information provided with your product packaging or visit the official Sealy website.
Note: Specific warranty terms and conditions may vary. Please consult your product's packaging or the official Sealy website for detailed warranty information.





