The Testo 174 H mini data logger is a sophisticated device for precise monitoring of temperature and humidity. It is particularly suitable for storing temperature-sensitive goods such as food or for monitoring the climate in archives. With a measuring range of -20 °C to +70 °C, the data logger reliably records current values and documents limit value violations. The storage of up to 16,000 measured values enables comprehensive analyses over longer periods of time. The data can be configured and evaluated easily using the free testo Smart App, which enables intuitive report generation and data evaluation via Bluetooth up to 30 metres away. In addition, the automatic data backup ensures that no measurement data is lost, even if the battery is empty or needs to be replaced. Two channels for simultaneous measurement of temperature and humidity. Intuitive configuration and analysis via the testo Smart App. Bluetooth data transmission up to 30 metres. Automatic data backup in case of empty battery or battery change. Stores up to 16,000 readings for comprehensive analyses.