Aura2 · Ambient sensor module
Day and night, on record
Stand-alone logging of temperature, humidity and pressure
Temperature, humidity and barometric pressure where you weigh and measure, every value with its standard deviation and number of readings.
Coming early 2027
Calibration
Traceable to the SI
Supplied uncalibrated as standard, with calibration as an option: by Qualimetric in accordance with ISO/IEC 17025, or by a calibration laboratory of your choice. A unique hardware identity links every reading to its certificate.
Logging
Logs on its own
Every 60 seconds, or anything from 5 seconds to 24 hours, to a microSD card: also on battery, also without a computer. Read measurements and log files from a browser over Wi-Fi; settings change over USB only.
Statistics
Every value with its spread
Each value is the average of a series of independent readings, 16 by default and up to 200, reported with its standard deviation and number of readings: ready for a type A uncertainty evaluation. No smoothing, no filters.
Weighing
Air-buoyancy correction
Temperature, humidity and pressure at the moment of weighing, for the air density and the correction to the mass.
Quality
ISO/IEC 17025 records
Ambient conditions monitored and recorded where they influence your results, day and night.
Independent
Stand-alone and secure
No cloud, no account, no app that has to stay online. Wireless access is read-only.
Environmental log
A day on record
Temperature from the log of an Aura2 on 3 October 2026: one value per minute, each the mean of 16 readings with its standard deviation. On the right, half an hour enlarged.
Data access
Read it your way
No app to install. Open the address of the Aura2 in a browser on the same network and it answers with the measurement as JSON: the mean of 16 readings with its standard deviation. Or read it from your own software in a few lines of Python, with nothing but the standard library. Both are real: an Aura2 on our network, on 8 October 2026.
Preventive service
We recommend a preventive service every two years, at additional cost: new battery and clock cell, the current firmware if you wish, and a full function test. Combined with a calibration, the unit is calibrated as found and as left, keeping your measurement history continuous.
Front, back and inside
Specifications
| Aura2 | |
|---|---|
| Temperature | 0 – 50 °C |
| Relative humidity | 0 – 95 %RH, non-condensing |
| Barometric pressure | 30 – 125 kPa |
| Calibration (optional) | by Qualimetric in accordance with ISO/IEC 17025, or by a calibration laboratory of your choice |
| Calibration range (optional) | 10 – 30 °C · 20 – 85 %RH · 80 – 120 kPa (Qualimetric calibration; accredited calibration range on request) |
| Output | mean, SD and n per quantity; pressure in Pa |
| Averaging | 1 – 200 readings per measurement |
| Interface | USB-C; Wi-Fi 2.4 GHz (read-only HTTP/JSON) |
| Data access (API) | REST API over Wi-Fi for measurements and log files (JSON, logs as CSV), discoverable on the network; JSON protocol with CRC-32 over USB. See the API manual (PDF) |
| Environmental log | microSD, CSV, one file per day (UTC), interval 5 s – 24 h |
| Real-time clock | with backup cell; set from computer or time server |
| Power | 5 V DC via USB-C; Li-Po 3.7 V |
| Enclosure | 150 × 82 × 30 mm |
| Operating conditions | indoor, 0 – 50 °C, 0 – 95 %RH non-condensing; charging 0 – 45 °C |
| Software | browser access over Wi-Fi; documented API over USB and Wi-Fi for your own software |
Not for safety-critical or life-support applications. The environmental log is indicative; use requested measurements for calibration records.
Coming early 2027
Register your interest to be kept informed of the release, or tell us about your balance room and software so we can advise on its use.
Descriptions reflect the products as they are being developed and may change before release. See our disclaimer.