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Hi Richard, I've been using several DLP Design TH1 USB2.0 loggers which run into my media cabinets, and it may even survive the harsh environments of a refrigerator. I haven't tried this, but the specs claim it's good down to -40F: http://www.ftdichip.com/Documents/DataSheets/DLP/dlpth1ds.pdf It requires that you keep a computer running 24/7, and if you need to run the sensor any more than 6 feet from the computer, you'll need a USB2.0 repeater (which is what I do). The software is rather primitive, and if you want to generate a report you'll need to manipulate the raw data in something like Microsoft Excel. I think the DLP-TH1 is a good solution for technically minded users who don't mind rolling up their sleeves. It certainly is not "turnkey" or "plug-n-play". If you find the accuracy acceptable and can live with the above limitations, then the DLP-TH1 sensor/logger is a reasonably cost-effective solution. Eric Jacobs Principal The Audio Archive tel: 408.221.2128 fax: 408.549.9867 mailto:[log in to unmask] -----Original Message----- From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]]On Behalf Of Richard L. Hess Sent: Wednesday, June 20, 2007 12:59 PM To: [log in to unmask] Subject: Re: [ARSCLIST] Dataloggers Hi, Andy, I asked this question over on the Society of American Archivists list a while back and the Hobo series of dataloggers came up more than any other by a wide margin. I've had mixed experience with Omega products, especially in a refrigerator-type environment. I killed a $300 Omega logger and also a smaller one with USB port (the latter was replaced under warranty). In both cases the non-replaceable humidity sensor failed. The good folks at OnSet computing suggested that for refrigerators and freezers I would really want to use their waterproof line. I haven't purchased yet (good thing the Cdn$ is going up--later) but it's about $350US to get your first logger including the pro software and the interface, and then $140 per additional logger. http://www.onsetcomp.com/solutions/products/loggers/_loggerviewer.php5 is a good page to start. Many of these have user-replaceable humidity sensors. The interface is cool as it is optical so there are no contacts on the logger and the battery, while pricey, lasts about 3 years. I think Omega sells the same battery for half the price of OnSet, so buy your loggers from OnSet and your batteries from Omega <smile>. The only problem is, I hear that you can't use them for railroad applications as they may change trains in the freight yards. <ka-ching>! Cheers, Richard At 02:13 PM 2007-06-20, Andy Lanset wrote: >Hello friends, > >Thanks for you input on Laughing Records. I've got another >query. > >Is there a temperature/humidity datalogger/monitor anyone can recommend with >for their controlled storage area(s). > >Thanks. > >Andy Lanset >WNYC Radio > Richard L. Hess email: [log in to unmask] Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX Detailed contact information: http://www.richardhess.com/tape/contact.htm Quality tape transfers -- even from hard-to-play tapes.