Testo 175 T2 Temperature Recorder with Internal and External Sensor Inputs for Environmental Monitoring

The testo 175 T2 temperature data logger has an internal sensor and a connection for an external temperature probe.

The temperature data logger such as the Testo 175 T2 or similar models is a compact electronic recorder designed to continuously measure and store temperature over long periods, providing timestamped digital logs that can later be reviewed and analysed on a PC — a capability that goes far beyond simple spot checks with handheld thermometers because it captures trends and excursions automatically. Temperature data loggers are widely used in industries where precise environmental control, product quality and compliance matter, including food storage and cold‑chain logistics, pharmaceuticals and healthcare, manufacturing process monitoring and environmental testing, where continuous recorded data supports quality assurance and traceability to regulatory standards such as EN 12830 and HACCP certification used in food safety programmes. 

Reliable dual-channel temperature monitoring for food and pharmaceuticals

Delivery Scope

Applications

Monitoring and documenting cold storage temperatures

Essential for foodstuffs and medicines that must remain within strict temperature ranges, the logger is placed at critical control points (CCPs) to detect fluctuations and ensure compliance with quality regulations.

Monitoring frozen storage areas

Used in freezer rooms at small manufacturers, restaurants, supermarkets, or large cold storage facilities. EN 12830-compliant, the logger records air temperature at key locations like doors or refrigeration units, enabling analysis and long-term storage of data.

Ensuring proper storage conditions

By automatically tracking ambient temperature, the testo 175 T2 helps maintain product quality in food and pharmaceuticals. Alerts for limit violations allow rapid responses, and software enables detailed analysis of recorded data.

Transit temperature monitoring

Maintaining the correct temperature during transport prevents product spoilage and quality loss. The data logger allows continuous monitoring of goods in transit, with data easily read, analyzed, and stored via compatible software. Data Sheet

Complementary solutions

The TR‑55i‑Pt Infrared Temperature Data Logger, which provides extended probe compatibility and wide range temperature measurement in harsh environments, or the HiTemp140‑FR High Temperature Data Logger designed for submersible operation and precision logging up to 140 °C. For processes where internal core readings are critical, the RTR‑602L Food Core Temperature Data Logger offers a long round‑tip sensor suited to deep product probes and HACCP‑compliant food safety monitoring.

Can I use the testo 175 T2 in a deep freezer?

Yes, the internal probe works down to -35 °C, and optional external probes can extend measurement up to -80 °C or higher depending on the model.

How long does the battery last?

The AAA batteries can last up to 3 years, depending on measurement frequency, and are user-replaceable without losing stored data.

Is it compliant with food safety standards?

Yes, it meets EN 12830, is HACCP-certified, and is IP65 rated for protection against water spray.

Can I program the logger without a PC?

Basic settings can be viewed and monitored on the device display, but full programming requires compatible software.

How much data can it store?

It can store up to 1 million readings, covering extensive monitoring periods without frequent data downloads.