The Testo 174 mini temperature and relative humidity data logger is an efficient, compact and easy-to-use single channel, mini data logger for all types of highly accurate temperature monitoring. This Testo data logger comes in two different models: the Testo 174T which measures temperature and the Testo 174H which measures both temperature and relative humidity.

Testo 174T (Temperature) features an internal NTC temperature sensor with a measurement range from -30°C to +70°C, an accuracy of ±0.5°C and a resolution of 0.1°C. It is ideal for temperature measurements in refrigerators, freezers, cold rooms and display cases. Features include secure data protection (even with drained battery), memory of up to 16,000 values, IP65 splash-proof rating and a measuring cycle from 1 minute to 24 hours (user selectable). Battery life approximately 500 days.

Testo 174H (Temperature & Humidity) measures temperature (-20°C to +70°C) and relative humidity (0 to 100% RH). Humidity accuracy is ±3%RH (2% to 98%RH). Temperature accuracy is ±0.5°C. It is designed for indoor climate monitoring in warehouses, offices, schools, production areas, and confined spaces. Features include memory of up to 16,000 values, IP20 protection class, and approximately 1 year of battery life.