The Testo 175 H1 Data Logger for Temperature and Humidity Monitoring
Accurate, reliable monitoring for buildings and closed spaces
The testo 175 H1 data logger measures, monitors, and records temperature and relative humidity with high precision. It features an external humidity sensor (stub) for faster response times and a security lock to prevent tampering. In addition to temperature and humidity, it also logs dew point values. The clear display shows current readings, adjustable thresholds, breached limits, and remaining battery life.The Temperature and Humidity Data Logger is an electronic monitoring device designed to autonomously record environmental temperature and relative humidity over time using integrated sensors or external probes, with data retrieval via USB, Bluetooth, Wi‑Fi or compatible software platforms. Data loggers of this class are widely used in quality control and environmental monitoring because they provide continuous, unattended measurement — a significant advantage over manual checks — allowing businesses to track trends, export logs for analysis, and meet compliance requirements in regulated environments.
Reliable performance and security
Equipped with advanced technology, the testo 175 H1 provides secure, dependable measurements. Its large memory stores up to 1 million readings, and long-lasting batteries offer up to 3 years of operation. This allows flexible data readouts even with short measuring cycles. User-replaceable triple AAA batteries are included in the delivery scope.
Programming and analyzing your data
Choose from three software options to program and read your logger or analyze your measurements on a PC:
ComSoft Basic – included – quick and easy programming and analysis
ComSoft Professional – optional – advanced analysis and detailed reporting
ComSoft CFR 21 Part 11 – optional – for pharmaceutical compliance with 21 CFR Part 11
Note: A USB cable is required to program the logger (not included). Data transfer to a PC can be done via USB or SD card, both available as optional accessories.
Applications and industries
The testo 175 H1 is ideal for continuous monitoring of indoor climate in buildings, archives, storage facilities, and workplaces. Industries such as logistics, HVAC, laboratories, and museums benefit from its precise temperature and humidity control. Users praise its fast response sensor, long battery life, and robust design compared to similar loggers.
Delivery Scope
testo 175 H1 2-channel data logger for temperature and humidity, with external sensor (NTC/capacitive humidity sensor), wall bracket, lock, batteries, and calibration protocol.
For comprehensive environmental monitoring alongside the Testo 175 H1 logger
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