Introduction
Thank you for choosing the Maestri House DualFro 400 Milk Frother. This device is designed to enhance your coffee experience by providing variable temperature and froth thickness options for a variety of beverages, including lattes, cappuccinos, and hot chocolate. Please read this manual carefully before use to ensure safe and optimal operation.
Key Features
- Variable Temperature & Froth Thickness: Offers 4 temperature settings (Ordinary Temp, 120°F, 140°F, 160°F) and 3 froth thickness options (low, medium, high).
- Large Capacity: 14.1oz (400mL) jug capacity for heating, 7oz (200mL) for frothing.
- Smart Touch Control: Intuitive panel with illuminated controls for easy function selection.
- Ingenious Design: Stainless steel look, designed for optimal consistency.
- Easy Maintenance: Scratch-resistant, non-stick inner coating, and IPX6 waterproof design for simple cleaning.
Setup
Before first use, ensure all packaging materials are removed. Wash the frother jug and lid with warm, soapy water, then rinse and dry thoroughly. Place the frother on a stable, flat, and dry surface near a power outlet.

Image: Maestri House DualFro 400 Milk Frother in use, demonstrating milk being poured into a glass with different froth levels.
Operating Instructions
1. Fill with Milk
Pour milk into the frother jug. Observe the internal MAX and MIN markings. For frothing, do not exceed the lower MAX line (7oz/200mL). For heating or hot chocolate, do not exceed the upper MAX line (14.1oz/400mL).

Image: Maestri House DualFro 400 showing internal MAX and MIN fill lines for heating and frothing.
2. Select Settings
Place the lid on the frother. Use the touch control panel to select your desired settings:
- Temperature: Press the temperature button to cycle through Ordinary Temp (cold froth), 120°F, 140°F, and 160°F.
- Froth Thickness: Press the froth option button to choose between low, medium, and high froth thickness.

Image: Close-up of the Maestri House DualFro 400's smart touch control display, showing temperature and froth options.
3. Start Frothing/Heating
Press the power button to start the process. The frother will automatically stop once the selected temperature and froth consistency are achieved. The display will show the current temperature during operation.

Image: Maestri House DualFro 400 displaying various temperature options and corresponding beverage examples.
4. Memory Function
The frother features a memory function that remembers your last used settings for temperature and froth thickness, making daily use more convenient.
Video: Official Maestri House video demonstrating the milk frother's operation, including filling, setting temperature, and frothing milk.
Cleaning and Maintenance
Regular cleaning ensures the longevity and performance of your milk frother.
- After Each Use: Immediately rinse the interior of the jug and the whisk with water.
- Hand Wash: The frother jug has a non-stick inner coating and is scratch-resistant. Hand wash with warm, soapy water and a soft cloth or the included brush to remove tough stains.
- IPX6 Waterproof Design: The frother is designed to be waterproof, allowing for easy rinsing under a tap. Avoid submerging the base unit in water.
- Drying: Dry all parts thoroughly before storing.

Image: Maestri House DualFro 400 being rinsed under a faucet, highlighting its IPX6 waterproof design for easy cleaning.
Specifications
| Feature | Detail |
|---|---|
| Brand | Maestri House |
| Model Name | MMF-9201 |
| Color | White |
| Material | Stainless Steel |
| Capacity | 400 Milliliters (14.1 oz) |
| Power Source | Corded Electric |
| Special Feature | Overheat Protection |
| Product Care Instructions | Hand Wash Only |
Troubleshooting
- Frother not turning on: Ensure the frother jug is correctly placed on the power base and the power cord is securely plugged into a working outlet.
- Milk not frothing or heating: Check that the whisk is properly installed at the bottom of the jug. Ensure milk levels are within the MIN and MAX markings.
- Whisk getting stuck: Ensure the whisk is clean and free from any dried milk residue. Re-seat the whisk firmly.
- Inconsistent froth: For richer froth, use milk with a fat content of over 3% and protein content surpassing 5%.
Warranty and Support
Maestri House products typically come with a one-year warranty from the date of purchase. For warranty claims, technical support, or any questions regarding your DualFro 400 Milk Frother, please contact Maestri House customer service. Refer to the product packaging or the official Maestri House website for contact information.







