Quick Start Guide for 174T & 174H Data Loggers

Product Overview

The Testo 174T and 174H are compact data loggers designed for reliable temperature and humidity monitoring. The 174T model measures temperature, while the 174H model measures both temperature and humidity. These devices are ideal for various applications requiring precise environmental data logging.

Technical Specifications

• Measuring Range: 174T: -30 to +70 °C; 174H: -20 to +70 °C / 0 to 100 % RH.
• Memory Capacity: 16,000 readings.
• Protection Class: 174T: IP 65; 174H: IP 20.
• Battery: 2 x 3 V button cell (CR 2032 Lithium).
• Dimensions: 60 x 38 x 18.5 mm.
• Weight: 35g.

Safety Instructions

To ensure safe operation, follow these guidelines:

• Use the product only for its intended purpose and within specified parameters.
• Do not use force.
• Never measure on or near live electrical parts.
• Keep the read-out contacts on the rear of the logger away from live parts.
• Dispose of spent batteries according to local legal requirements.
• Do not use the device in polluted environments (heavily dusty, oily, or volatile chemicals).

Operation and Setup

The data logger is delivered secured in a wall bracket. To release it, push both locks on the bottom of the bracket outwards and slide the logger out. Configuration and programming of the logger are performed via the Testo ComSoft software, which is available as a free download after registration. The device display provides real-time status updates, including current readings, alarm thresholds, and battery capacity.

Maintenance and Disposal

Perform only the maintenance and repair work described in the full instruction manual, using original Testo spare parts. At the end of its service life, dispose of the product at a designated collection point for electric and electronic devices or return it to Testo. Note that the internal button cell contains 1,2-Dimethoxyethane.