179-PDF-T External Temperature & Humidity Data Logger

179-PDF-T External Temperature & Humidity Data Logger

Reusable USB PDF logger with external probe for precise cold chain monitoring

Product descriptions

The Apresys 179-PDF-T is a multi-use temperature and humidity data logger equipped with an external sensor probe, designed for environments where the logger body must stay outside the monitored space — such as inside refrigerated containers, vaccine fridges, or sealed packaging. Simply connect it to any computer via USB, and an encrypted PDF report generates automatically — no software installation required.

Key Features:

· External probe design: monitor conditions inside sealed containers while the display remains accessible outside

· Auto PDF report: plug into USB → get timestamped temperature/humidity charts in seconds, no drivers needed

· Large LCD: real-time view of current temp, RH, min/max, recording status, and remaining memory

· 24,000 readings capacity: supports intervals from 1 minute to 24 hours for long-haul shipments

· Replaceable battery: uses standard ER14250 3.6V lithium cell — no need to discard the whole unit

· Calibration-ready: factory calibrated, supports re-calibration to maintain ISO/GxP compliance

Applications:

Pharmaceutical & Vaccine Cold Chain

Monitor fridge and freezer temperatures during last-mile vaccine distribution. The external probe fits through cooler lid seals while the LCD stays visible for drivers.

Food Transportation & Warehousing

Track temperature and humidity in reefer containers and cold storage rooms. PDF reports serve as proof of compliance for HACCP and food safety audits.

Chemical & Electronics Shipping

Document environmental conditions for moisture-sensitive components and chemical reagents during international freight.

Laboratory & Research

Record stable conditions in incubators, environmental chambers, and sample storage areas with exportable data for regulatory submissions.

Specifications

FAQs

Q: Do I need to install software to read the data?

A: No. The 179-PDF-T generates a PDF report automatically when connected to a computer USB port. Configuration software is available for free download if you need to change logging intervals or alarm thresholds.

Q: Can the external probe be extended?

A: The probe comes with a standard cable length. Custom probe lengths are available for OEM/ODM orders — contact our sales team for details.

Q: How many times can the logger be reused?

A: The device is designed for repeated use. Battery life depends on logging interval; at 15-minute intervals, typical battery life exceeds 12 months. The battery is user-replaceable.

Q: Is the PDF report tamper-proof?

A: Yes, the generated PDF includes encrypted timestamp data that cannot be altered, making it suitable for regulatory compliance and dispute resolution.

User Manual:

1, Start: long press the START / UP button for 5 seconds, the LED light flashes 2 times slowly and 10 times quickly, REC display on LCD

2, Stop: long press the STOP / DOWN button for 5 seconds, the LED light flashes 2 times slowly and 10 times quickly, END display on LCD

3.When the capacity is full, it will stop recording automatically;

* Restart will cause data lost, Pls save the data in time to avoid data loss.

Related Products:

· Single-use PDF Temperature Data Logger (PDF-L)

· Dry Ice Temperature Data Logger (PDF-DI)

· 4G Wireless Temperature Tracker

Learn More:

· Cold Chain Temperature Monitoring Guide (/Resources/348.html)

· OEM/ODM Customization Services (/oem/)