In today’s data-driven world, environmental monitoring has become mission-critical for industries ranging from pharmaceuticals to manufacturing, food storage to warehousing, facility management to laboratory management. There is an increasing demand for accuracy, accessibility, and compliance. T&D Corporation, a pioneer in temperature and humidity data logging solutions, has answered this call with the TR7A2 series – an innovative range of cloud-compatible data loggers engineered to deliver precision, flexibility, and enterprise-class security.
A Smart Evolution in Data Logging
The TR7A2 series marks a significant advancement in environmental data logging technology. Designed to seamlessly integrate into today’s connected ecosystems, these loggers can measure and record both temperature and humidity with high accuracy, while offering flexible connectivity options to match your existing infrastructure.
Two network-compatible models are available:
- Wireless LAN-compatible TR7A2 for environments with existing Wi-Fi networks.
- Wired LAN-compatible TR7nw for installations that require stable, hardwired network connections. This dual approach ensures that regardless of the network topology – be it a distributed system or a centralized enterprise server – users can implement TR7 series data loggers without compromising on performance or compatibility.
Robust Display & Notification Features
The TR7A2 data loggers offer a dual-tier display with alarm alerts, allowing users to view real-time measurements across two channels simultaneously. Users can also set upper and lower limit alarms, making it easy to detect and respond to threshold violations. Additionally, each unit includes a MAX/MIN display feature that automatically clears at regular intervals, allowing users to track daily environmental fluctuations with ease.
Built for Compliance: Vaccine Temperature Monitoring
For pharmaceutical and healthcare applications where precision is vital, T&D offers specialized models designed for vaccine temperature monitoring:
- TR71A2: A 2-channel thermistor logger ideal for standard vaccine storage.
- TR75A2: A 2-channel thermocouple logger capable of recording ultra-low temperatures, making it suitable for the cold chain logistics of biologics and mRNA vaccines.
These models are fully VFC-compliant, offering a dedicated vaccine mode for proper configuration according to health guidelines and ensuring users stay within regulatory parameters while maintaining the safety and efficacy of critical medical supplies.
Flexibility Through Battery Operation
Battery powered, TR7A2 loggers offer a wide range of placement possibilities – even in locations where power outlets are unavailable or hard to reach. This mobility is particularly valuable for on-site monitoring in warehouses, laboratories, mobile units, or transport vehicles.
Whether the logger is used in a static cold storage facility or a portable medical cooler, users benefit from consistent, uninterrupted data collection.
Secure Data and Storage Reliability
The TR7A2 series delivers peace of mind through advanced data protection features. In the event of a power failure – even if the battery is completely discharged – the unit’s internal memory backup ensures that no recorded data is lost. Each unit also has a large memory capacity, capable of storing 30,000 readings per channel. This ensures uninterrupted long-term monitoring in critical environments where continuous logging is non-negotiable.

Real-Time, Cloud-Based Data Access
With support for T&D’s free WebStorage Service, users can upload and access data in real-time – anytime, anywhere -via smartphone, tablet, or PC. This functionality enables swift operational oversight, rapid response to incidents, and simplified data sharing across teams or facilities. If you are not using our cloud-based T&D WebStorage service, T&D Data Server software allows you to use the PC with the application installed as a server to receive and store data from compatible devices. It is also possible to monitor current readings using a web browser and to send alert emails.
Enterprise-Grade Network Security
To meet modern IT security standards, TR7A2 loggers support WPA2 Enterprise and 802.1X authentication (EAP-TLS, EAP-PEAP (MSCHAPv2)). This makes them ideal for deployment in large corporations with managed IT infrastructure, government offices and universities requiring secure, compliant systems and also healthcare networks that are managing sensitive data. Communication is conducted over secure HTTPS protocols, ensuring end-to-end protection for transmitted data.
Enhanced PC and Bluetooth Integration
Complementing the network capabilities is a ‘TR7 for Windows’ application that includes support for Bluetooth communications. This allows users to set up devices and retrieve data directly from a Bluetooth-enabled PC or via the T&D Thermo app from a mobile device such as a smartphone, eliminating the need for cables or a network. It is also useful for remote access in the field or for quick checks.
Optimized for Performance and Versatility
The TR7A2 series includes four versatile models, each designed to serve specific application needs with high performance and long-term reliability. All loggers offer high-accuracy sensors, power-saving operation modes for long-term deployments as well as
automatic data backup functions, real-time alerts and visual feedback via two-channel display. Whether you’re monitoring clean rooms, vaccine fridges, food storage, or server rooms, TR7A2 loggers offer unmatched performance in demanding environments.
Designed for Today’s Engineering Demands
The TR7A2 series exemplifies what modern engineering tools should be: intelligent, adaptable, and secure. Engineers no longer need to compromise between data integrity, accessibility, and IT compatibility. With multi-communication options, robust cloud integration, enterprise-grade network support, and industry-specific compliance, these loggers offer an ideal solution for both individual users and large-scale operations.