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MaxiLog-RH Multi-Use

A multi-use, pre-programmed, electronic temperature data recorder for measuring temperatures and humidity during the transportation of refrigerated vaccines, biological material, chemicals, pharmaceuticals, and for documenting the transportation of perishable commodities.

Memory: 8k
Temperature Range:
-20°C TO +70°C

CALL 800-858-6872


Download Product Brief:
MaxiLog RH
Download: MaxiLog Quick Start Guide


Now enjoy direct USB connectivity with MaxiLog-RH, our multi-use, compact, temperature and humidity data logger!

Functions include:

  • Internal digital thermistor and RH sensor for user selectable readings in Fahrenheit or Celsius.
  • LCD display for current temperature, RH and Run Times, and Over Alarm conditions.
  • Alarm Values: All of our devices can be pre-programmed with delayed start and high/low alarm values.

These devices are designed to measure critical temperature and RH profiles during shipment and storage. The small compact design makes it the ideal companion for all your critical pharmaceutical and regulatory shipments. Its precision sensors are ideal capture devices to ensure product specifications have been maintained during all your shipments. They are NIST-traceable and come with a certificate of conformance.

The LCD shows current temperature and relative humidity as well as Run Time and Time over Alarm conditions.
When attached to our 21 CFR compliant software, customers will find it ideal for all regulatory shipments needing precise environmental tracing for both temperature and humidity while in shipment or during stationary applications. Time-stamped data is easily viewed for both temperature and relative humidity.

Our specially prepared software will allow the logger to be automatically read once our free software is downloaded from our website. PDF files can then be easily created and e-mailed globally to all parties of interest.

Single-use version also available.

recycleMarathon will pay a US $3 rebate for each used electronic data logger (ctemp 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.

MaxiLog-RH – SKU #7071
Logger Category, Description Category 2. Multi-Use. Temperature and Humidity (RH) data logger with LCD screen, built-in Mini-USB connection, and a compact size.
Memory/Storage 8k memory (approximately 8,000 measurements)
Internal Sensor Temperature:
Wired chip in glass thermistor
Range: -20°C to +70°C / -4°F to +158°F
Accuracy: ±0.2°C at 0° to 10°C, ±0.6°C at extremes / ±0.36°F at 32° to 50°F, ±1.1°F at extremes
Temperature Resolution: 0.1°C / 0.18°F
Humidity: Sensirion SHT-30
Range: 0% to 100%
Accuracy: ±2% from 0% to 80%. ±4% from 80% to 100%
Humidity Resolution: 0.1%
External Sensor/Probe count and connector type None
Alarm Programming User configurable. High and low alarm limits can be set by temperature.
Alarm Modes Exceed Limit. See Alarms for more information.
Alarm Reset Options Alarm is reset when logger is erased and reprogrammed
Alarm Notifications On screen text. See Alarms for more information.
Audible Alarm None
Display LCD screen
Indicators On screen text
Size and Weight 8.8 cm(l) x 3.5 cm(w) x 1.5 cm (h) / 3.5 in.(l) x 1.4 in (w) x .6 in.(h)
32 grams / 1.13 oz.
CE Certified Yes
Water-resistant No
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) USB Type A
Data Retrieval Method Download to PC using a compatible cable and software
Programming (Initialization) Method User Programmable through PC using a compatible cable and Marathon software
Wireless Connection and Range None
Remote Monitoring and Network Connection type None
Required Accessories: Compatible Software (1 required for operation): • MaxiThermal2, • 21 CFR
Computer Interface (1 required for operation): • USB
Optional Accessories: Mounting Bracket
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 CR2450 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.

MaxiThermal2 Software for USB Loggers

Marathon’s MaxiThermal2 Software for USB Data Loggers

Marathon’s MaxiThermal2 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. The graph and all data points (date, time and temperature) can be printed.

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. 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. MaxiThermal2 software is compatible with Windows XP, Vista, 7, 8 and 10.

MaxiThermal2 Software is not 21CFR Part 11 compliant. Click here for 21CFR Part 11 Compliant Software.

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