testo Saveris 2-T2 WiFi Refrigerated Storage Temperature Monitoring Kit

Overview

The testo Saveris 2-T2 WiFi Refrigerated Storage Temperature Monitoring Kit is an engineered solution for continuous, unattended temperature surveillance of cold-chain storage environments—including pharmaceutical refrigerators, clinical specimen fridges, vaccine coolers, laboratory cold rooms, and retail pharmacy units. Built on a validated wireless data logging architecture, the system operates on the principle of high-stability NTC thermistor sensing coupled with real-time WLAN-based telemetry to the testo Cloud platform. Unlike manual logbook methods or standalone dataloggers requiring physical retrieval, the Saveris 2-T2 enables automated acquisition, timestamped storage, and remote validation of temperature history—ensuring full traceability from installation through audit readiness. Its design specifically addresses the thermal inertia challenges inherent in refrigerated storage: by integrating glycol-filled thermal simulation bottles, it replicates the thermal mass of stored products (e.g., vials, ampoules, biological samples), thereby suppressing transient spikes caused by door openings while preserving detection sensitivity for genuine out-of-specification excursions.

Key Features

• Dual-channel NTC probe interface with flat-profile cables—engineered to maintain refrigerator door seal integrity without compromising access or insulation.
• Glycol-filled thermal simulation bottles (included) provide physiologically relevant thermal buffering, aligning recorded data with actual product core temperature dynamics per EN 12830 requirements.
• IP65-rated enclosure ensures resistance to condensation, cleaning agents, and incidental splashes—critical for high-hygiene environments such as cleanrooms and hospital pharmacies.
• Automatic cloud synchronization via secure 2.4 GHz Wi-Fi (WPA2-PSK); no local server or gateway hardware required.
• Configurable alarm logic: email and SMS notifications triggered upon deviation from user-defined upper/lower limits, rate-of-change thresholds, or duration-based excursion criteria.
• Battery-powered operation (4 × AA) with low-power RF design; Energizer L91 lithium batteries supported for reliable function down to –30 °C ambient.

Sample Compatibility & Compliance

The Saveris 2-T2 is validated for use with temperature-sensitive materials stored under controlled conditions, including but not limited to vaccines (per CDC/ACIP guidelines), biologics (per ICH Q5C), reference standards (USP ), and blood bank components (AABB Standards). Its measurement performance complies with EN 12830:2018 (“Refrigerated transport and storage equipment — Temperature monitoring equipment — Performance specification and testing”), establishing metrological suitability for GxP-regulated cold chain applications. The system supports ALCOA+ data integrity principles: attributable (user login + device ID), legible (PDF export with embedded metadata), contemporaneous (real-time timestamps), original (cloud-stored raw data), accurate (calibration-certificate-traceable sensors), complete (no gaps in sequence or time), consistent (audit trail of all configuration changes), enduring (encrypted long-term retention), and available (role-based web access with optional offline backup). Full compliance with FDA 21 CFR Part 11 is enabled via testo Cloud’s electronic signature and audit trail functionality when deployed with appropriate organizational SOPs.

Software & Data Management

All measurement data are uploaded to the testo Cloud—a ISO/IEC 27001-certified infrastructure hosted in German data centers—where users access dashboards, trend charts, statistical summaries (min/max/mean/deviation), and automated PDF report generation. The platform includes configurable user roles, multi-site management, and customizable alert templates. An open RESTful API allows bidirectional integration with enterprise systems including LIMS, ERP (e.g., SAP), CMMS, and electronic batch records—enabling centralized temperature governance across distributed facilities. Raw CSV exports and structured JSON payloads support internal validation protocols. Audit logs record every login, setting modification, report download, and alarm acknowledgment—retained for ≥36 months and exportable for regulatory inspection.

Applications

• Pharmaceutical quality assurance: Continuous monitoring of 2–8 °C vaccine refrigerators and –20 °C freezers in distribution centers and hospital pharmacies.
• Clinical research: Temperature validation of biospecimen storage units in biobanks and trial sites (ISO 20387 compliance support).
• Food safety management: HACCP-critical monitoring of chilled display cabinets and prep refrigeration in retail and healthcare foodservice.
• Academic laboratories: Unattended environmental logging for incubators, cold rooms, and reagent storage zones requiring GLP-aligned documentation.
• Regulatory submissions: Generation of compliant temperature dossiers for EMA Annex 15, WHO TRS 961, and MHRA GDP inspections.

FAQ

Does the Saveris 2-T2 require a local server or gateway?

No—it connects directly to your existing 2.4 GHz Wi-Fi network and transmits encrypted data to the testo Cloud without intermediate hardware.
Can I validate the system for GMP use?

Yes. IQ/OQ documentation templates, calibration certificates (traceable to DKD/DAkkS), and risk assessments are provided; full 21 CFR Part 11 compliance requires site-specific procedural controls.
How often does it measure and transmit data?

Measurement interval is configurable from 15 seconds to 24 hours; transmission frequency adapts dynamically based on network stability and battery status.
What happens if Wi-Fi drops temporarily?

Data are buffered locally (up to 10,000 readings) and automatically synchronized once connectivity resumes—no data loss occurs.
Is the glycol bottle calibration required?

No—the bottles serve as passive thermal mass simulators; their purpose is functional equivalence—not metrological calibration—and they do not require periodic recalibration.