Marmonix MT-41 Digital Temperature Datalogger

The Marmonix MT-41 is a disposable USB temperature data logger with an on-device LCD for cold-chain and storage monitoring. Compared with the MT-40 USB temperature logger, choose the MT-41 when you want live LCD status (current temperature, recording state, max/min/avg, and alarm icons) during the run—not only a PDF after the trip ends.

Browse Marmonix dataloggers, or step up to multi-use Bluetooth logging with the MHT-60B USB Bluetooth data logger when you need reusable RH/temperature monitoring.

MT-41 temperature datalogger highlights

What the MT-41 gives cold-chain and lab teams:

• Temperature range −30 °C to +70 °C (−22 °F to +158 °F)
• Typical accuracy about ±0.5 °C from −20 °C to +40 °C (±1 °C elsewhere)
• Memory for up to about 30,000 readings with configurable interval (default 5 min)
• IP67 housing plus integrated USB 2.0 for automatic PDF and CSV reports
• On-device LCD with recording/alarm status and max/min/avg history
• Compact about 82 × 32 × 7 mm and ~21 g for shipment packages

Where teams use the MT-41 digital temperature logger

Typical MT-41 use cases include:

• Pharmaceutical & medical — validated shipping lanes and fridge packs
• Food & beverage cold chain — chilled and frozen distribution
• Laboratory samples — transfer between sites with a disposable record
• Warehouse & refrigerated storage — spot campaigns with alarm thresholds

MT-41 typical specifications

MT-41 temperature logger questions

What temperature range does the MT-41 cover?

The MT-41 logs from about −30 °C to +70 °C (−22 °F to +158 °F), covering most chilled and frozen cold-chain lanes plus ambient storage checks.

When should I choose the MT-41 instead of the MT-40?

Choose the MT-41 when operators need an on-device LCD for live temperature, max/min/avg, and alarm status during the shipment; pick the MT-40 when a compact USB PDF logger without that live screen focus is enough.

Does the MT-41 create a PDF without software?

Yes — plug the integrated USB into a PC and the logger generates PDF and CSV reports automatically; do not disconnect while the blue LED shows report generation.

Related: Dataloggers · MT-40 · MHT-60B