Acaia Umbra Coffee Scale

Acaia Umbra Scale

The Acaia Umbra is a display-free, Bluetooth-enabled precision scale engineered for advanced espresso workflows and integrated café setups. Built with an anodized aluminum top, polycarbonate base, and 0.1 g resolution, it delivers lab-grade weighing accuracy while shifting all visual output to a connected device or another Acaia scale.

With Magic Relay, Umbra can transmit live weight data to a Pearl or Lunar, effectively converting them into remote displays. This enables a cleaner bar layout, faster data interpretation, and tighter control over extraction variables such as flow rate, preinfusion behavior, and yield consistency.

Who It’s Made For & Why You Need It

• High-volume commercial baristas
  Need: streamlined workflow with fewer screens.
  Why Umbra: Magic Relay sends real-time weight to a primary scale, allowing baristas to monitor shot yield from a single viewpoint while keeping the espresso machine area uncluttered.

• Espresso techs & precision-focused home brewers
  Need: accurate data for dialing in grind, pressure, and flow.
  Why Umbra: 0.1 g precision + app-based visualizations (Acaia apps) let users track extraction curves, shot variability, and flow-rate stability.

• Minimalist or integrated setups
  Need: clean aesthetics and centralized control.
  Why Umbra: With no physical display, it reduces equipment footprint while offering 40–48 hours of active runtime and Bluetooth data routing through a phone or tablet.