testo Saveris 2-H1 Wireless Temperature & Humidity Data Logger

Overview

The testo Saveris 2-H1 is a certified, cloud-connected wireless temperature and humidity data logger engineered for continuous environmental monitoring in regulated and non-regulated settings. It employs a factory-calibrated NTC temperature sensor and a capacitive humidity sensor to deliver traceable, high-reproducibility measurements compliant with ISO 17025–aligned calibration practices. Designed for deployment in cold chain logistics, pharmaceutical storage, food warehousing, laboratory ambient monitoring, and HVAC validation, the device operates autonomously within its specified environmental envelope (−30 to +50 °C), transmitting time-stamped measurement data via secure Wi-Fi to the testo Cloud infrastructure. Its architecture eliminates manual data retrieval, enabling real-time oversight and audit-ready documentation without on-site hardware interfaces.

Key Features

• Integrated dual-sensor system: High-stability NTC thermistor (±0.5 °C accuracy) and capacitive RH sensor (±2 %RH accuracy) housed in a single IP30-rated enclosure
• Local display showing real-time temperature, relative humidity, alarm status, battery level, and signal strength — no external device required for field verification
• Configurable alarm logic including upper/lower limit thresholds, delay timers, and system-level alerts (e.g., low battery, Wi-Fi disconnection, power interruption)
• Two-tier cloud service model: Free Basic plan (3-month data retention, fixed 15-min intervals) and subscription-based Advanced plan (2-year retention, 1-min to 24-h configurable intervals, SMS alerting, API access, automated report generation)
• Secure communication stack supporting WPA2 Enterprise authentication and MQTT over TLS, ensuring alignment with IT security policies in GxP environments
• User-replaceable AA batteries with 24-month typical service life under standard conditions; Energizer L91 lithium batteries recommended for sub-zero operation (−10 °C and below)

Sample Compatibility & Compliance

The testo Saveris 2-H1 is not designed for direct sample immersion or aggressive chemical exposure, but is optimized for ambient air monitoring in enclosed or semi-enclosed spaces — including refrigerated warehouses, cleanrooms, incubators, transport containers, and office environments. Its measurement performance meets requirements referenced in EU GDP Annex 9, USP , and ISO 14644-3 for environmental qualification. While the device itself is CE-marked and RoHS-compliant, its use in FDA-regulated applications requires validation per 21 CFR Part 11 — supported by testo Cloud’s audit trail functionality (available in Advanced plan), which logs all configuration changes, user actions, and alarm events with timestamps and operator IDs. The system supports GLP/GMP-aligned workflows through exportable PDF/CSV reports containing metadata, calibration status, and uncertainty statements.

Software & Data Management

Data management is fully web-native via the testo Cloud platform, accessible from any modern browser or mobile app (iOS/Android). Configuration — including sensor units, alarm thresholds, logging intervals, and notification rules — is performed remotely without physical access to the logger. All measurement values are time-synchronized using SNTP to ensure temporal coherence across distributed deployments. The Advanced plan enables RESTful API integration for enterprise systems (e.g., MES, LIMS, SCADA), allowing automated ingestion of time-series data into internal analytics pipelines. Audit trails record every parameter change, user login, and alarm trigger with immutable timestamps. Reports can be scheduled or generated on-demand in PDF (with digital signature option) or CSV formats, preserving full traceability for internal audits or regulatory inspections.

Applications

• Pharmaceutical cold chain monitoring: Continuous validation of storage conditions for vaccines, biologics, and temperature-sensitive APIs
• Food safety compliance: HACCP-critical zone monitoring in chillers, freezers, and distribution centers per IFS Food and BRCGS standards
• Medical device storage: Environmental verification for Class II/III devices requiring stable RH control
• Research facility ambient tracking: Long-term stability assessment of lab environments affecting instrument calibration integrity
• Federal and municipal archive preservation: Monitoring of temperature/humidity parameters critical to document longevity per ISO 11799

FAQ

Is the testo Saveris 2-H1 suitable for outdoor use?
No — its IP30 rating provides only limited protection against solid objects and no ingress protection against water; it is intended exclusively for indoor or sheltered indoor-like environments.
Can multiple Saveris 2-H1 loggers be managed under one cloud account?
Yes — both Basic and Advanced plans support unlimited logger registration per account, enabling centralized oversight across multi-site deployments.
Does the device support external probe connectivity?
No — the Saveris 2-H1 features only built-in NTC and capacitive sensors; for multi-point or surface temperature measurement, consider the Saveris 2-T1 (external Pt100 input) or Saveris 2-W1 (wireless probe hub) variants.
How is time synchronization maintained during network outages?
The logger maintains internal RTC accuracy of ±1 minute per month and resumes SNTP synchronization automatically upon Wi-Fi restoration; buffered data remains intact in non-volatile memory.
What happens to stored data if the cloud subscription expires?
In the Advanced plan, historical data remains accessible for the duration of the retained period (up to 2 years); however, new measurements will cease uploading once the license lapses unless renewed or downgraded to Basic.