Maestri House S1 Air Ultra-Slim Espresso & Pour-Over Scale — 0.1g Accuracy, Built-In Timer

The Maestri House S1 Air is an ultra-slim, rechargeable espresso and pour-over scale that delivers 0.1g accuracy, built-in timer modes, and a compact profile that fits under most machines.

Compact enough to slide beneath an espresso machine yet precise enough to dial-in recipes, the S1 Air is designed for home baristas and mobile brewers who value repeatable results. Its feather-thin 0.63-inch body, fast-response sensor, and three brewing modes let you measure yield, track extraction time, and fine-tune ratios without cluttering your counter. The scale combines a waterproof ABS surface, hidden LED display, and a removable silicone pad so it stands up to daily use and heat exposure.

How does the S1 Air simplify espresso dosing and shot timing?

The S1 Air’s Espresso Mode automates tare and shot timing so you can focus on distribution and tamping. With 0.1g sensitivity and near-instant stabilization, it captures small changes in yield for consistent extraction control. The scale’s compact footprint makes it easy to position directly under portafilters for real-time monitoring.

• Auto tare and automatic shot timer for hands-free extraction tracking
• 0.1g increments for accurate yield control
• Small surface fits under most commercial and home espresso machines

What features help with pour-over brewing and ratio accuracy?

Pour-Over Mode pairs weight and time to guide bloom and pour intervals, helping you reproduce recipes precisely. The fast, stable sensor registers quick weight changes as water is added, and the visible timer keeps pour sequences consistent. A manual mode is available when you need conventional scale functions without brewing presets.

• Integrated timer and weight tracking for bloom and pulse pours
• Manual Mode for standard weighing tasks and flexible workflows
• Rapid stabilization for accurate water measurements during pours

Is the S1 Air durable and convenient for daily use or travel?

Built from heat-resistant ABS with a seamless, waterproof surface, the S1 Air resists scratches and is easy to wipe clean after messy brews. A removable silicone insulating pad protects both the scale and your machine from heat, while USB-C charging keeps it ready at home or on the road. Mute and auto-sleep functions make it café-friendly and suitable for quiet environments.

• Heat-resistant ABS housing and waterproof surface for easy cleaning
• Removable silicone pad for heat insulation and added stability
• USB-C rechargeable battery with auto-sleep and mute option

How precise is the measurement range and response speed?

The S1 Air measures from 0.3g up to 2000g with 0.1g resolution, allowing both micro-dosing for espresso and larger quantities for batch brews. Its high-sensitivity sensor responds quickly and stabilizes fast so you get reliable readings during dynamic brewing situations. That speed supports accurate yield measurement and consistent recipe repetition.

• 0.1g precision for fine-tuning espresso yield and brew ratios
• 0.3g–2000g range covers tiny doses to larger weighing tasks
• Fast response and quick stabilization during extraction

Who this is for: The Maestri House S1 Air suits home baristas, specialty coffee enthusiasts, and mobile brewers who need a small, exacting scale that won’t compromise counter space. It’s ideal for users who value automated espresso timing, consistent pour-over routines, and a durable, travel-ready design. If you want a minimal, professional-grade tool for dialing recipes and improving repeatability, the S1 Air is built to fit under your workflow and your machine.