The Holtronic neo® Blu is a wireless electronic temperature data logger that transfers complete breach records — including extent, duration and timing — contactlessly to any Android device. No cables. No internet. No physical access to the device needed.
A temperature data logger records temperature conditions continuously over time, timestamping every reading and storing the complete history for later retrieval and analysis. Unlike a simple breach indicator, which only tells you whether a threshold was crossed, a data logger gives you the full picture: every reading, every event, with precise timing.
The Holtronic neo® Blu is a next-generation wireless data logger that takes this further: it retrieves and transfers that complete record contactlessly to any smartphone or tablet, without requiring physical access to the device, internet connectivity, or specialist data retrieval equipment.
This makes it uniquely suited to cold rooms, sealed containers, vehicles in transit, inaccessible storage racks and security-sensitive environments where conventional data loggers are impractical to read without opening, unlocking or disturbing the monitored space.
| Capability | Holtronic neo® Blu | Traditional Logger |
|---|---|---|
| Continuous logging | ✓ | ✓ |
| Breach detection & duration | ✓ | ✓ |
| LED visual status | ✓ | ✗ |
| Contactless data retrieval | ✓ | ✗ Physical access |
| No internet required | ✓ | ✗ Often needed |
| Android app | ✓ | ✗ PC often needed |
| In-App Reporting | ✓ | ✗ Partial |
| Travels with product | ✓ | ✗ Travels with shipment |
The neo® Blu’s four-stage workflow is the same as any Holtronic neo® indicator — but with wireless data retrieval and professional reporting built in, without any additional infrastructure.
Activation is a single button press. The neo® Blu begins recording temperature immediately and the LED array on the device face confirms monitoring is active.
It can be attached to a product, placed in a cold room, fixed inside a vehicle or positioned at any monitoring point — from a warehouse shelf to a sealed shipping container.
Unlike traditional fixed data loggers, the neo® Blu is compact and lightweight enough to travel with the individual product throughout its journey — providing granular, item-level data rather than environmental averages.
Single-button activation — no setup, pairing or configuration |
Compact form attaches to products, packaging or fixed monitoring points |
Multiple units can be deployed simultaneously across a space |
Traditional temperature data loggers require physical access, specialist download equipment or cloud connectivity. The neo® Blu removes every one of those barriers — without compromising on data quality, compliance readiness or accuracy.
The Holtronic app is the command centre for all neo® Blu data logging. It connects to active devices wirelessly, retrieves complete temperature histories, displays alarm status and generates audit-ready reports — all offline, all free.
📊 View alarm status and temperature data
See live alarm status, breach history and full temperature log from all connected Neo Blu devices in a single view.
🔒 Offline — no internet, no cloud account
All functions operate without internet connectivity. No account creation, no data upload, no subscription. Data stays on the device until you choose to share it.
Free download for Android and iOS. Compatible with all neo® Blu indicators. No account required.
The Holtronic neo® Blu is a wireless electronic temperature data logger that uses wireless technology to transfer complete breach data — including the extent, duration and timing of any temperature excursions — contactlessly to Android devices via a free app.
It records temperature conditions continuously, displays status via LED indicators, and generates audit reports, all without requiring internet connectivity or physical access to the device.
The neo® Blu uses contactless wireless technology for data transfer over greater distances without direct line of sight, including through packaging and container walls.
Users simply open the Holtronic app on a compatible smartphone, bring it within range of the indicator, and the full temperature history downloads automatically.
No cables, no proprietary readers and no internet connection are required.
No. Every function of the neo® Blu — activation, monitoring, data retrieval, report generation — works offline without an internet connection.
Data transfers directly from the indicator to the smartphone. This makes the neo® Blu fully operational in secure facilities, cold stores, vehicles and remote locations where internet access may be restricted or unavailable.
Yes. The neo®Blu is designed for use in GDP and GxP-regulated pharmaceutical cold chain environments. Its breach reports provide the documented temperature evidence required for pharmaceutical storage compliance, including evidence of breach extent, duration and timing.
Reports are suitable for QA review, regulatory audit and quality control documentation. For applications requiring cumulative shelf life calculation, the neo® TTI time-temperature integrator would be the appropriate Holtronic product.
Request samples of the neo® Blu and experience contactless temperature data logging in your own environment. Our UK-based team is available to discuss your specific cold chain monitoring requirements.
