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Our entry level USB data logger that offers the best value against the competition.

Memory: 8k
Temperature Range:
-40°C TO +72°C / -40°F to +161°F

CALL 800-858-6872


Download Product Brief:


c\temp-USB is the revolutionary, single-use, pre-programmed, electronic temperature data recorder specifically designed for measuring temperatures during the transportation of refrigerated vaccines, biological material, chemicals, pharmaceuticals, and for documenting the transportation of perishable commodities. The ctemp-USB is NIST-Traceable and comes with a Certificate of Calibration and Traceability.

Functions include: The internal thermistor accurately records time and temperatures for pre-programmed readings in Celsius or Fahrenheit. The larger format c\temp-USB has an extended battery life, is water-resistant and can endure rough handling.The internal software records the following: start time, intervals, end description for special instructions, alarm values, recording status, measurement data, software version, serial and tracking number, and model type.

Visual alarms: All our data loggers can be programmed with alarm limits. Should the temperature reach levels outside these limits, the on-board red LED will light. To start the recorder, simply press the start button!

Computer ready: MaxiThermal software is used to read the logger. It runs on Windows XP, Vista, and 7, 8 & 10. To download recorded information,simply plug the unit into the standard USB port of your PC. The MaxiThermal software and USB cable are available as separate accessory items.

Note: a minimum order consists of 20 units.

recycleMarathon will pay a US $5 rebate for each used electronic data logger (c\temp red, gray, yellow or blue) returned to us. This will help us meet our green environmental objectives and our customers will save the cost of the disposal of the electronic waste, which contains printed circuit boards and alkaline or lithium batteries. Go to the REBATE page for more information and to download the return form.

c\temp-USB – SKU #7009
Logger Category, Description Category 1, Single-Use. Low-cost compact data logger with Mini-USB connection to PC and internal thermistor.
Memory/Storage 8k memory (approximately 8,000 measurements)
Internal Sensor Nist-traceable Precision SMT Thermistor
Range: -40°C to +72°C / -40°F to +161°F
Accuracy: ±0.5°C at 0° to 10°C, ±1°C at extremes / ±0.9°F at 32° to 50°F, ±1.8°F at extremes
External Sensor/Probe count and connector type None
Alarm Programming Pre-programmed to your specifications. Also user configurable at any time before the logger has been started. High and low alarm limits can be set by temperature.
Alarm Modes Exceed Limit. See Alarms for more information.
Alarm Reset Options None
Alarm Notifications Red LED flashes when alarm has been triggered. See Alarms for more information.
Audible Alarm None
Display None
Indicators LED indicators: on/recording (green), alarm (red)
Size and Weight 13 cm(l) x 6.8 cm(w) x 2.0cm (h) / 5.1 in.(l) x 2.7 in (w) x .8 in.(h)
71 grams / 2.5 oz.
CE Certified Yes
Water-resistant Yes, IP66 rated
Internal Firmware, Internal Clock Accuracy Internal Clock, Start/Stop time, Interval, User description, Alarm values, Recording status, Firmware version, Serial number, Model.
Clock Accuracy is better than 2 minutes per month on average at normal temperatures (-29°C to +72°C).
For loggers directly exposed to temperatures at or below -80°C, the expected accuracy is ±15 minutes per month
Measurement Intervals Programmable from 2 seconds per reading. See Duration Chart for examples.
Computer Interface (physical) Mini-USB
Data Retrieval Method Download to PC using a compatible cable and software
Programming (Initialization) Method Comes pre-programmed to your specifications. Also user programmable through PC using a compatible cable and Marathon software before the unit has been started.
Wireless Connection and Range None
Remote Monitoring and Network Connection type None
Required Accessories: Compatible Software (1 required for operation): • Maxithermal
Computer Interface (1 required): • Standard A to Mini-B USB cable
Optional Accessories: None
Included paperwork Quality Control sheet, NIST certificate, Packing List included with all purchases. See the Calibration page for more information.
Optional Paperwork Calibration Report including data included with purchase of Optional Calibration. See the Calibration page for more information.
Power Source, Battery Life and Replacement One 3.0 Volt Lithium Battery. 1 year operating life and 3 year shelf life. See Battery Performance page for more information.
Batteries are changed as part of the recommended annual recalibration. For battery replacement only, Call for price.
Warranty 1 Year Limited Warranty

Specifications subject to change without prior notice.

MaxiThermal Software

Marathon’s MaxiThermal Software for USB Data Loggers

Marathon’s MaxiThermal Software allows you to view up to 8 multiple traces at one time, enables you to transfer the recorded information in your loggers to your computer, and to view, print and generate a report of the measurement data. The graphic representations are a simple X – Y plot of time versus temperature with unlimited zoom, or the exact time when it was recorded. The graph and all data points (date, time and temperature) can be printed, as well as the ability to add a user note to the summary for including information pertinent to that particular plot.
Users have the ability to view numeric data in a screen window and data can be exported as a CSV file for use in other software. Users can also create and print a Summary Information report showing the specific logger information, the Start and Stop Time, Duration of Recording, Measurement Interval, Highest, Lowest, Median and Average Temperatures as well as the High and Low Alarm information.
The data from the logger is easily downloaded to your PC via a standard USB 1.1 interface. MaxiThermal software is compatible with Windows XP, Vista, 7, 8 and 10.

USB Cable

USB Standard A to mini B Cable
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