Introduction
The Maestri House S2 Espresso Coffee Scale is designed for precise weighing and timing during coffee preparation. Its compact size and 0.1g accuracy make it suitable for various brewing methods, including espresso and pour-over. This manual provides instructions for proper setup, operation, and maintenance to ensure optimal performance.

Figure 1: Maestri House S2 Espresso Coffee Scale.
Package Contents
- Maestri House S2 Coffee Scale (1 unit)
- Silicone Pad (1 unit)
- USB-C Charging Cable (1 unit)
- User Manual (This document)
Setup
1. Charging the Scale
Before first use, fully charge the scale using the provided USB-C cable. Connect the USB-C end to the scale's charging port and the other end to a compatible USB power adapter (not included). The built-in 500mAh lithium battery provides up to 90 days of use on a single charge under typical daily usage.

Figure 2: USB-C charging port on the Maestri House S2 scale.
2. Placing the Silicone Pad
Place the detachable silicone pad on the weighing platform. This pad provides heat resistance, anti-slip support, and protects the glass surface from scratches and spills.

Figure 3: Applying the silicone pad to the scale.
Operating Instructions
1. Power On/Off
To power on the scale, press the POWER button located on the side. To power off, press and hold the POWER button for a few seconds. The scale will automatically enter sleep mode after 6 minutes of inactivity to conserve power.
2. Unit Conversion
The scale supports weighing in grams (g), ounces (oz), and milliliters (ml). To switch between units, briefly press the UNIT button (often integrated with the power button or a separate button labeled 'UNIT' or 'MODE').
3. Tare Function
The tare function allows you to reset the display to zero after placing a container on the scale, so you only measure the contents. Place your container on the scale, then press the ZERO/TARE button. The display will show "0.0" and you can then add your ingredients.
4. Timer Modes
The S2 scale features both automatic and manual timing modes for tracking extraction time.
- Automatic Timer: In this mode, the timer starts automatically when weight is detected (e.g., when espresso begins to flow) and stops when the weight stabilizes or flow ceases.
- Manual Timer: To manually control the timer, press the TIMER button to start and stop.

Figure 4: Scale in use for espresso and pour-over coffee, demonstrating timer functionality.
5. Mute Function
To mute or unmute sound feedback from the scale, press and hold the TIMER and ZERO/TARE buttons simultaneously for approximately 3 seconds.
Video 1: Official video demonstrating the features and operation of the Maestri House S2 Rechargeable Coffee Scale with Timer.
Video 2: Official video showcasing the compact design and timer functions of the Maestri House Mini Coffee Scale.
Maintenance
1. Cleaning
The scale features a sleek borosilicate glass surface. To clean, wipe with a soft, damp cloth. Avoid abrasive cleaners or harsh chemicals that could damage the surface or display. The silicone pad can be removed and washed with mild soap and water.
2. Storage
Store the scale in a dry place away from extreme temperatures and direct sunlight. Ensure no heavy objects are placed on the weighing platform when not in use to prevent damage to the sensors.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Scale does not turn on | Low battery or no power. | Charge the scale using the provided USB-C cable. |
| Inaccurate readings | Scale not on a flat, stable surface; external vibrations; overloaded. | Place the scale on a firm, level surface. Avoid vibrations. Ensure weight is within capacity (0.5g to 2001g). |
| Display shows "Err" | Overload or internal error. | Remove items from the scale. If error persists, power cycle the device. |
| Timer not starting/stopping automatically | Not in automatic timer mode; insufficient weight change. | Ensure the scale is in automatic timer mode. Verify that the weight change is significant enough to trigger the sensor. |
Specifications
- Model: K112
- Brand: Maestri House
- Weight Capacity: 0.5g to 2001g
- Readout Accuracy: 0.1g
- Units: g, oz, ml
- Display Type: LED
- Battery: Built-in 500mAh Lithium-ion (Rechargeable via USB-C)
- Auto Shut-off: 6 minutes of inactivity
- Dimensions: 4.13 × 4.13 × 0.79 inches
- Material: Acrylonitrile Butadiene Styrene, Glass
Warranty and Support
Maestri House products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the contact information provided on the product packaging or visit the official Maestri House website. Please retain your proof of purchase for warranty claims.




