Oracer ET-02
Oracer Coffee Mug Warmer Instruction Manual
Model: ET-02
Brand: Oracer
1. Introduction
Thank you for choosing the Oracer Coffee Mug Warmer. This device is designed to keep your beverages, such as coffee, tea, water, or milk, at an ideal warm temperature, ensuring you enjoy every sip. Its smart features and compact design make it a convenient addition to any desk or home environment. Please read this manual thoroughly before use to ensure safe and optimal operation.

Image: The Oracer Coffee Mug Warmer in gray, showcasing its sleek, compact design with a black heating plate and a red power indicator light.
2. Setup
Setting up your Oracer Coffee Mug Warmer is quick and easy.
- Unpack: Carefully remove the mug warmer from its packaging.
- Placement: Place the mug warmer on a flat, stable, and dry surface, away from water sources or flammable materials. Ensure there is adequate ventilation around the unit.
- Power Connection: Plug the extended 5-foot power cord into a standard 110V electrical outlet.

Image: A diagram illustrating the sleek and compact design of the mug warmer, highlighting its ABS frame, anti-scratch glass heating plate, touch-activated switch, and the 60-inch (5ft) extra-long cord. Dimensions are shown as 5.5 inches wide and 0.7 inches tall.
3. Operating Instructions
The Oracer Coffee Mug Warmer features simple one-button control for ease of use.
- Power On: After plugging in the device, tap the touch-activated switch once. The indicator light will illuminate red, signifying the high temperature setting (approximately 140℉ / 60℃).
- Select Temperature:
- Tap once for High (Red light, approx. 140℉ / 60℃).
- Tap twice for Low (Blue light, approx. 120℉ / 50℃).
- Place Mug: Place your mug on the heating plate. For best warming performance, use mugs with a thin wall and a flat bottom.
- Power Off: Tap the switch three times to turn the warmer off. The indicator lights will turn off.

Image: A visual guide demonstrating the one-button control for temperature selection: Tap once for High (140°F, red light), Tap twice for Low (120°F, blue light), and Tap three times to turn off (lights out).

Image: The mug warmer actively heating a beverage in a clear mug, with visual effects indicating heat emission, emphasizing its function to keep drinks warm all day.
4. Safety Features
Your safety is a priority. The Oracer Coffee Mug Warmer is equipped with multiple safety protections:
- Automatic Shut-Off: The device will automatically turn off after 8 hours of continuous use to prevent overheating and save energy.
- Intelligent Cup Sensing: The heating plate will automatically shut off within 5 minutes if it detects that the cup has been removed from the warming surface. This feature provides peace of mind, ensuring the warmer is not left on unnecessarily.
- NTC Temperature Control: Built-in NTC (Negative Temperature Coefficient) technology helps prevent overheating by precisely controlling the heating element's temperature.

Image: An illustration highlighting the three main safety features: Mug Sensor Off (5 minutes without a mug), Auto Shut-Off (after 8 hours of use), and NTC Temp Control (prevents overheating), with a mug on the warmer.
5. Maintenance and Care
To ensure the longevity and proper functioning of your mug warmer, follow these simple maintenance guidelines:
- Cleaning: The conductive glass surface is waterproof and easy to clean. Wipe the surface with a damp cloth after ensuring the device is unplugged and completely cool. Do not immerse the unit in water or any other liquid.
- Storage: When not in use for extended periods, unplug the warmer and store it in a dry, cool place.
- Avoid Abrasives: Do not use abrasive cleaners or scouring pads, as they may scratch the glass surface.
6. Troubleshooting
If you encounter any issues with your Oracer Coffee Mug Warmer, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Warmer does not turn on. | Not plugged in correctly; Power outlet malfunction; Device malfunction. | Ensure the power cord is securely plugged into a working outlet. Try a different outlet. If the issue persists, contact customer support. |
| Beverage is not hot enough. | Incorrect temperature setting; Mug type not suitable; Too much liquid. | Ensure the warmer is on the high temperature setting (red light). Use mugs with thin walls and flat bottoms. Reduce the amount of liquid if the mug is very large. |
| Warmer turns off unexpectedly. | Automatic shut-off activated (8 hours); Mug removed from sensor; Sensor malfunction. | This is a safety feature. If it happens before 8 hours or without mug removal, ensure the mug is centered on the heating plate. If the issue persists, contact customer support. |
| Warmer turns on by itself. | Sensor sensitivity; Electrical anomaly. | Ensure no objects are accidentally touching the sensor area. If this occurs frequently, unplug the device when not in use and contact customer support. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | ET-02 |
| Voltage | 110 Volts |
| Wattage | 20 watts |
| Temperature Settings | Two levels: 130℉ (Low) - 150℉ (High) / 50℃ - 65℃ |
| Automatic Shut-off | After 8 hours of continuous use |
| Mug Sensing | Shuts off in 5 minutes if mug is removed |
| Material | Glass, Plastic (ABS frame) |
| Item Weight | 9.1 ounces |
| Package Dimensions | 7.2 x 5.63 x 1.46 inches |
| Cord Length | 5 feet (60 inches) |
| Country of Origin | China |
8. Warranty and Support
The Oracer Coffee Mug Warmer comes with a 12-month warranty from the date of purchase. This warranty covers manufacturing defects and issues arising from normal use.
If you experience any problems with your product or are not completely satisfied, please do not hesitate to contact our customer service team. We are committed to resolving any issues promptly and ensuring your satisfaction.
For support, please visit the Oracer Store on Amazon or refer to the contact information provided with your purchase documentation.

Image: A collage showing the versatility of the mug warmer, suitable for various settings like an office desk, home use, personal enjoyment, and as a thoughtful gift.