Product Overview
The Elitech LogEt 1TH is a single-use temperature and humidity data logger designed for efficient cold chain management. It features an internal NTC thermistor for accurate measurements and generates PDF reports directly via its USB port, simplifying data retrieval.
Key features include:
- High accuracy: ±0.6°F (temperature) and ±3% (humidity).
- Software-free online configuration via Elitech website.
- Clear LCD screen displaying alarm status and temperature statistics.
- Direct USB connection for data download without additional software or cables.
- Large memory capacity: Up to 16,000 temperature points and 16,000 humidity points.
- Long battery life: Up to 2 years.

Image: Elitech LogEt 1TH Temperature and Humidity Data Logger, showing its compact design and USB interface.
Device Components
The LogEt 1TH data logger consists of several key components:

Image: Diagram illustrating the components of the LogEt 1TH, including the USB Protective Cover, LCD Screen, LED Indicator, Button, and Light Sensor. The serial number (S/N: EML207100001) and website (www.elitechlog.com) are visible on the device label.
- USB Protective Cover: Protects the USB connector.
- LCD Screen: Displays real-time data, alarm status, and device information.
- LED Indicator: Provides visual status updates (e.g., recording, alarm).
- Button: Used for starting, stopping, and marking data points.
- Light Sensor: Detects light exposure.
Setup and Configuration
The LogEt 1TH can be configured easily without installing any software.
Online Configuration
- Navigate to the Elitech website: www.elitechlog.com.
- Access the online configuration tool.
- Set desired parameters such as log interval, alarm thresholds, and start delay.
- Apply the configuration to the device.

Image: The LogEt 1TH device alongside a representation of its auto-generated PDF report and the online configuration interface, highlighting the ease of setup.
Operating Instructions
Starting the Logger
To begin data logging, press and hold the button for approximately 5 seconds until the "REC" indicator appears on the LCD screen, confirming that recording has started.
Stopping the Logger
The logger can be stopped in two ways:
- Manual Stop: Press and hold the button for approximately 5 seconds until the "STOP" indicator appears.
- Auto-Stop: The logger will automatically stop recording once its memory capacity is full or the configured log cycle duration is reached.
Viewing Data on LCD
The LCD screen provides real-time temperature and humidity readings, as well as status indicators. You can scroll through different display modes by briefly pressing the button (e.g., to view current temperature, humidity, max/min values, or alarm status).

Image: Close-up of the LogEt 1TH's LCD display, showing temperature (40.8°F), humidity (88.8%), and various logging parameters like log cycle, interval, and alarm thresholds. The serial number (S/N: EML188100001) is also visible.
Downloading Data and Reports
Once logging is complete, remove the USB protective cover and plug the device directly into a computer's USB port. The LogEt 1TH will automatically generate a PDF report containing all recorded data, which can then be saved or printed.
For advanced data analysis, including chart comparison and data export to Excel, utilize the ElitechLog software available for macOS and Windows systems, or the online webpage configuration tool.

Image: Infographic detailing the capabilities of Elitechlog, including data query & storage, chart comparison for multiple devices, temperature unit switch, settable alarm range, email backup, data graph visibility, and data export (PDF & Excel), along with FDA 21 CFR Part 11 compliance.
Maintenance
The Elitech LogEt 1TH is designed for single use and requires minimal maintenance.
- Cleaning: Wipe the device clean with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.
- Battery: The device contains a single-use lithium battery with a life of approximately 2 years when stored and used under normal temperature conditions. The battery is not user-replaceable.
- Storage: Store the logger in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
If you encounter issues with your LogEt 1TH, consider the following:
- Device not starting: Ensure the button is pressed and held for the required 5 seconds. Check if the battery life has expired (though designed for 2 years, extreme conditions can affect it).
- No PDF report generated: Ensure the device is fully inserted into the USB port. Try a different USB port or computer.
- Inaccurate readings: Ensure the device is placed in an environment where air can circulate freely around the sensors. Avoid placing it directly next to heat sources or cold spots.
- LCD display not working: Check for physical damage. If the device has been exposed to extreme temperatures or humidity, allow it to return to normal operating conditions.
For persistent issues, please contact Elitech customer support.
Specifications

Image: Detailed table of technical specifications for the Elitech LogEt 1TH, including measurement ranges, accuracy, battery type, and certification.
| Parameter | Value |
|---|---|
| Temperature Measurement Range | -30°C to +70°C (-22°F to +158°F) |
| Temperature Accuracy | ±0.3°C (-20°C to +40°C), ±1°C (other) |
| Humidity Measurement Range | 0% to 100% RH |
| Humidity Accuracy | ±3% (20% to 80% RH), ±5% (other, under 25°C) |
| Resolution | 0.1°C, 0.1% RH |
| Sensor Type | Internal NTC thermistor |
| Memory Capacity | 16000 readings (MAX) |
| Log Interval | 12 minutes (default, configurable) |
| Alarm Threshold | Optional, up to 5 thresholds |
| Data Interface | USB port |
| Report Type | PDF format (via USB), PDF/EXCEL/TXT (via ElitechLog software) |
| Battery | Single-use lithium battery (CR2450 button cell) |
| Battery Life | 2 years (under normal temperature environment) |
| Product Dimensions | 7.87 x 2.29 x 12.95 cm; 81 g |
| Certification | WHO PQS, CE, FDA, FC, TUV |
| Protection Level | IP65 |

Image: Example of a Calibration Certificate for the Elitech LogEt 1TH, showing model, serial number, calibration date, and accuracy verification. The package contents are also listed: Data Logger, Box, Certificate of Calibration, and User Manual.

Image: The Elitech LogEt 1TH data logger placed inside a cold chain container, illustrating its use in monitoring temperature and humidity during transport, emphasizing its suitability for sensitive product logistics.
Warranty and Support
Warranty Information
For detailed warranty terms and conditions, please refer to the official Elitech website or contact Elitech customer support directly. Keep your purchase receipt and the device's serial number (e.g., EML188100001 or EML207100001) for any warranty claims.
Customer Support
Elitech provides 24/7 US Technician Support via email and phone. For assistance, visit the official Elitech website at www.elitechlog.com or refer to the contact information provided with your product packaging.





