Good Morning all: If you check the specifications for the HOBO dataloggers in the Onset Computer catalog or website, you will find that the RH range for the H8 loggers is 25% to 95% at 77 deg. F. (25 deg. C.). The range for the HOBO Pro-8 loggers is 0 - 100% RH. Although they are more expensive ($159) and they are larger and a bit more visible than the H8 "minis", if low RH is a concern, I recommend spending the additional $$$. The HOBO Pro-8s can be downloaded using the HOBO H9 shuttle data transfer device. However, all H series loggers and their shuttle require serial connections. When I upgraded my laptop two years ago, I had to purchase a USB Serial adapter so that I could connect the laptop to my shuttle and loggers. Onset also sells the U-series loggers which are less expensive and have a USB interface cable. However, their range is not as wide as the Pro-8s: again 25 - 95% over the range of 41 - 131 deg. F. (5 - 55 deg. C.). They also require HOBOware Software, not BoxCar. To be fair, I haven't used the U-series loggers or the HOBOware, but I have been very pleased with the H series loggers and BoxCar. For data analysis, I export the Boxcar data to Microsoft Excel. I have found it easier to normalize the data and run statistics in Excel as well as print out clear and legible reports. I do keep copies of both Boxcar and Excel data on disk in case I need to refer to the original download data. I hope that this is helpful. Wendy Jessup Principal Conservator Wendy Jessup and Associates, Inc. Care of Cultural Property 933 North Kenmore Street, Suite 323 Arlington, VA 22201 (703) 522-2801 Fax: (703) 522-2802 www.collectioncare.com -----Original Message----- From: Museum discussion list [mailto:[log in to unmask]] On Behalf Of [log in to unmask] Sent: Tuesday, August 29, 2006 11:56 AM Subject: Low Humidity Dataloggers? Hello all, I have a related question regarding dataloggers. We are trying to find ones that have a larger range for humidity readings. Here in Denver, we can get down to 4%RH. The HOBOS I have looked at don't go down that far. Does anyone have any suggestions? Thanks, Isabel ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes). ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).