Introduction
Thank you for choosing the RIGSTNE Portable 20W Coffee Mug Warmer. This device is designed to keep your beverages at your preferred warm temperature, ensuring every sip is as enjoyable as the first. Its compact design and multiple features make it ideal for use at your desk, during travel, in the office, or at home.
Safety Information
- Hot Surface: The heating plate becomes hot during operation. Avoid direct contact with the heating surface to prevent burns. Always allow the device to cool down before handling or cleaning.
- Children and Pets: Keep the mug warmer out of reach of children and pets.
- Proper Placement: Place the device on a stable, flat, and heat-resistant surface. Ensure adequate ventilation around the warmer.
- Liquid Spills: While the glass-ceramic plate is water-resistant, avoid excessive liquid spills. If spills occur, unplug the device immediately and clean it once cooled.
- Power Supply: Use only the provided power cord and connect to a compatible power outlet. Do not use if the cord or plug is damaged.
- Intended Use: This device is intended for warming beverages and candles. Do not use it for cooking or heating other materials.
- Suitable Drinkware: Use flat-bottomed mugs made of glass, stainless steel, or ceramic for optimal heat transfer.
- Unsuitable Drinkware: Avoid using vacuum cups, double-walled glasses, plastic cups, or bagged drinks, as these may not heat effectively or could be damaged.
Package Contents
- RIGSTNE Portable 20W Coffee Mug Warmer (Model: RS-SW)
- Power Cord
- User Manual (this document)
Product Overview
The RIGSTNE mug warmer features a sleek design with intuitive controls for ease of use.
- Heating Plate: Glass-ceramic surface for efficient and even heat distribution.
- Digital Display: Shows current temperature setting.
- Temperature Control Button (SSS icon): Adjusts the warming temperature.
- Timer Button (Clock icon): Sets the automatic shut-off time.
- Non-Slip Feet: Ensures stability on various surfaces.

Image: RIGSTNE Portable Mug Warmer with a coffee cup, highlighting the digital display and control buttons.
Setup
- Unpack the mug warmer and all its components from the box.
- Place the mug warmer on a clean, dry, flat, and stable surface, ensuring it is away from flammable materials.
- Plug the power cord into a standard electrical outlet. The digital display will light up, indicating the device is ready for use.
Operating Instructions
1. Power On/Off
- To turn on the device, simply plug it into an outlet. The display will show the default temperature.
- To turn off the device, unplug it from the power outlet.
2. Adjusting Temperature
- Place your mug (containing your beverage) onto the center of the heating plate.
- Press the Temperature Control Button (marked with 'SSS' icon) repeatedly to cycle through the 5 available temperature settings: 113°F, 131°F, 149°F, 167°F, and 176°F.
- The digital display will show the selected temperature.

Image: The mug warmer showing its five adjustable temperature settings.
3. Setting the Timer (Auto Shut-Off)
- The mug warmer has a default automatic shut-off after 4 hours of continuous operation.
- To set a custom shut-off time, press the Timer Button (marked with a clock icon) repeatedly.
- You can select a timer setting from 2, 4, 6, 8, 10, or 12 hours. The display will show the selected time in hours (e.g., "2H", "4H").
- The device will automatically turn off once the set time has elapsed.

Image: The mug warmer's timer function, allowing users to set an auto shut-off from 2 to 12 hours.
4. Suitable Drinkware and Other Uses
- Recommended: Coffee mugs, flat-bottomed glass, stainless steel cups, ceramic mugs, milk boxes, feeding bottles.
- Candle Warmer: The device can also be used to warm scented candles, releasing aroma without an open flame.
- Not Recommended: Vacuum cups, double-walled glasses, plastic cups, bagged drinks. These materials may not conduct heat efficiently or could be damaged by the heat.

Image: Visual guide for suitable and unsuitable drinkware types for the mug warmer.

Image: The mug warmer functioning as a flameless candle warmer.
Maintenance and Cleaning
- Always unplug the device and allow it to cool completely before cleaning.
- Wipe the glass-ceramic heating plate with a soft, damp cloth. For stubborn stains, use a mild detergent.
- Do not immerse the device in water or any other liquid.
- Avoid using abrasive cleaners, scouring pads, or harsh chemicals, as these can damage the surface.
- Ensure the device is completely dry before plugging it back in for use.

Image: Cleaning the water-resistant glass panel of the mug warmer.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Not plugged in correctly or power outlet issue. | Ensure the power cord is securely plugged into both the device and a working electrical outlet. Test the outlet with another appliance. |
| Mug is not warming up. | Incorrect mug type or poor contact with heating plate. | Use a flat-bottomed mug made of glass, ceramic, or stainless steel. Ensure the mug is centered on the heating plate for optimal contact. |
| Device automatically shut off. | Timer function activated. | This is a normal function. The device will shut off after the set timer or the default 4-hour period. To continue warming, simply turn it back on. |
Specifications
- Model: RS-SW
- Wattage: 20 watts
- Maximum Temperature: 176°F (80°C)
- Temperature Settings: 5 options (113°F, 131°F, 149°F, 167°F, 176°F)
- Auto Shut-Off: Default 4 hours, adjustable from 2 to 12 hours
- Product Dimensions: 4.92 x 5.31 x 0.9 inches
- Item Weight: 11.7 ounces (0.33 Kilograms)
- Material: Ceramic (heating plate)
- Power Source: Corded Electric

Image: Dimensions of the RIGSTNE Portable Mug Warmer.
Warranty and Support
RIGSTNE products are designed for quality and reliability. For warranty information, technical support, or any questions regarding your product, please refer to the contact information provided on the product packaging or visit the official RIGSTNE website.
Please retain your proof of purchase for any warranty claims.
Official Product Videos
Video: RIGSTNE coffee mug warmer and candle warmer plate demonstration. This video showcases the product's dual functionality for keeping beverages warm and melting scented candles.
Video: RIGSTNE 20W coffee mug cup candle warmer plate for desk. This video provides a closer look at the warmer's features and how it operates in a desk setting.





