ACAIA
Precision without the display
The Umbra Lunar drops the screen and shares its reading with a paired Acaia scale or the Brewmaster app instead — Magic Relay keeps the same weight, timer and flow-rate data in view without adding a second display to your bar.
ACAIA
0.1g readability, 0.01g resolution
Bluetooth Low Energy 5.4 and the same industrial-grade sensor Acaia builds its flagship scales around give the Umbra Lunar 0.1g repeatability — precise enough to dial in a single-shot espresso dose to the tenth of a gram.
ACAIA
Built for a busy espresso station
At 105 × 105 × 15mm it slides under any portafilter, and the display-free design pushes battery life to 40–48 hours of continuous use with up to 14 days on standby — it'll outlast a full day on the bar without a top-up.
ACAIA
Two-year warranty, built to join the family
Anodised aluminium and polycarbonate construction, backed by a 2-year Acaia warranty. Pair it with a Pearl, Lunar or Pyxis scale via Magic Relay, or run it standalone through the Brewmaster app.
Specifications
General
| Capacity | 1000 g |
| Dimensions | 105 × 105 × 15 mm |
| Weight | 300 g |
| Warranty | 24 months |
| Dishwasher safe | No |
Electrical
| Model | AUL001 |
| Power supply | 5V / 500mA |
| Battery | Li-ion 3.7V 1100mAh |
| Battery life | 40–48 (up to 14 days standby) hours |
| Connectivity | Bluetooth Low Energy 5.4 |
Performance
| Maximum capacity | 1000 g |
| Readability | 0.1 / 0.01 g |
| Repeatability | 0.1 g |
Dimensions
| Dimensions | 105 × 105 × 15 mm |
| Weight | 300 g |
Materials
| Material | Anodised aluminium & polycarbonate |
| Warranty | 24 months |
In the box
- Umbra Lunar scale
- Heat-resistant pad
- 100g calibration weight
- USB-C charging cable
Next-day UK delivery available at checkout, or standard shipping. Free UK delivery on orders over £100.
Frequently asked questions
Which scales can the Umbra Lunar pair with?
Magic Relay lets the Umbra Lunar share its reading with a paired Pearl, Lunar or Pyxis scale, so you get one display for two footprints. Firmware updates continue to expand compatibility across the range.
Does the Umbra Lunar work without another scale?
Yes. Connect it to the Brewmaster app on iOS and it works as a standalone scale, showing weight, timer and flow-rate on your phone instead of a paired display.
How do I look after the Umbra Lunar?
Wipe it clean with a soft, damp cloth rather than submerging it, and rest hot servers or portafilters on the supplied heat-resistant pad. It's backed by a 2-year Acaia warranty.
Is the Umbra Lunar accurate enough for espresso dosing?
Yes — it reads to 0.1g with 0.01g resolution and 0.1g repeatability, comfortably within the precision baristas expect for single or double espresso doses.
- Display-free design shares its reading with a paired Acaia scale or the Brewmaster app via Magic Relay
- 0.1g / 0.01g readability with 0.1g repeatability — industrial-grade precision in a 105 × 105 × 15mm footprint
- Up to 40–48 hours continuous use, 14 days on standby, thanks to the low-power display-free build
- Bluetooth Low Energy 5.4 for fast, stable pairing with Pearl, Lunar and Pyxis scales
- Anodised aluminium and polycarbonate construction, 2-year warranty
- Free UK delivery over £100, next-day available
The Umbra Lunar strips the display away and puts Acaia's weighing tech into the smallest footprint yet. Pair it under a portafilter and relay the reading to a scale on your bar, or connect it to the Brewmaster app and run it standalone — either way, it's the same industrial-grade sensor Acaia builds its flagship scales around, in a scale built for tight espresso stations.
