DS102 USB Temperature Humidity Data Logger Recorder 20736 Points with PC Software

I first thought it wasn’t working. When I tried to read the data, the output defaults to the last hour of readings. To see the data on the computer screen, be sure to click the “Search” button; otherwise, you see none of the recorded data. For any data beyond the last hour, enter the start and ending date and time you want, then “Search”. The instructions weren’t completely clear on this. Or maybe my feeble brain wasn’t.At any rate, it does just what it says – records temperature and humidity at whatever time interval you choose. The data can be downloaded to a spreadsheet and the graph to a .jpeg file. I set it to record every 5 minutes. No, I have no need to know the conditions that often; it’s just that it makes a smooth curve on the graph. Recording at that rate, it should record for a month before I have to download and save the records (I’ve had it 15 days, and the indicator shows slightly less than half the memory is used up). So recording at a more reasonable 15- or 30-minute interval should give you 3 or 6 months of temperature and humidity records! The battery is supposed to last a year. Quite remarkable, I’d say. And there’s no start-stop; it records continuously, whether you want it to or not…!UPDATE -- 5 MONTHS LATER --Well gang, it records a whole lot more than I calculated before. It's recorded over 51,000 temperature/humidity readings every 5 minutes WITHOUT overwriting any of the earlier recordings yet.

I work for a painting company and need to keep a log of the temperature that the material is stored in our shop for warranty purposes. This works great! It logs anywhere from 1 minute to 4 hours (240 minutes). I only needed to log twice a day, but 4 times works as well. It is very convenient to download to MS Excel and save by the month. The only downside that I have is setting the time it records. Once you connect to your computer, select the logging time and hit save, it starts at that time. (example: 06:37:42) I wanted it on the hour: 06:00:00. While connected to the computer, I was able to start it on the hour/min/sec by counting down the seconds and hitting save at the exact second (note: it uses the time stamp of the computer you are plugged into). Unfortunately that is every 4 hours for me. It took a couple of days to get it to read 06:00:00, 10:00:00, 14:00:00 etc.

1. The software that comes with it is awful, although you can export data to a .csv file and actually do something with it. It's hard to understand in English (don't know about the other language settings). One star off for lousy software.2. When I download data it sometimes won't find the mosts recent several hours of data. One more star off for that.3. Most importantly, the temperature reading lags the actual temperature by up to an hour. So when my thermostat and another independent thermometer get to 70 degrees this unit will take 30-60 more minutes to get there. Two stars off for this terrible inaccuracy.4. My unit came with a temperature offset from three other thermometers of 5 degrees. (Fortunately, you can adjust for this, if you can find that setting in the software.). No more stars left to take off. . .

I had this working about 10 min after taking it out of the box. Software installation was a breeze, so I checked the USB communication for the data logging function, and now it's placed on location.

I have been using this logger to track the temperatures of a number of refrigerators/freezers. After initialization (they need to connect to the software loaded on a PC before they will record) to 10 minute recording intervals, I have left them in the freezer compartment(s) for 4-7 days. When I removed it, and reattached it to the software, I was able to download from it, records of temperature and humidity over the logging period. The software allows me to graph either the temperature or humidity, and save the graph as a .jpg (photo) file. The software (version 3.3) allows me to save a .csv of the log file as well.The software has a menu option for clearing the logger's memory, which leaves the logger's internal Real Time Clock (RTC) unchanged.I have not tested the accuracy of either the temperature or humidity sensors, but they "seem" close enough that I'm not concerned.My main complaints are:1. No Linux software. I had to load the software to a Windows 7 partition of my PC to use it. (I seldom use Windows at home).2. The software (Version 3.3) hangs the PC (spinning blue circle) for up to 15 minutes when I try to graph temperature. It appears to do this every time. The data does get displayed, but the PC is unusable until it finishes.In all, it accomplished what I needed (logging temperatures over a course of several days) for a price lower than most loggers.

Worked at first, but after leaving it in a storage shed for a few weeks, it wouldn't turn on or connect with the PC. Battery tested OK, so something had happened to the unit. Returned for credit. Not eager to try again.

I keep this in a shipping container in which I store mostly outdoor tools, but planning to maybe store some household stuff in the future. The temperature logger tells me that it gets just as cold in the container as it is outside. Cold snap in Feb 2021 (Texas) showed temp went as low as -8.5 degrees F.Don't confuse the humidity display for a low battery indicator.

Be prepared to buy a quality liquid filled thermometer and sling psychometer to ensure the unit is calibrated.

Bon produit bon serrvice

Bought 2 of these to record the temperature and humidity in my house while away for 6 months with the power off. Placed one on the main floor and one in the basement and set them to take a reading every 30 minutes. The one on the main floor worked perfectly and I was able to retrieve the data but the one in the basement had a blank screen and no data was found when connected to the computer. I switched the battery with the working unit but no change. Bottom line - one worked perfectly and the other failed.

Database Records 32534... Even if you delete all history and so on..When you want to export the CSV, one log is repeating itself 30 times..Other than that, after 3-4 days of hanging the unit, it frozen, can't do nothing at all, I let it sit on the desk while I was preparing the return of the item... to find out 2 days later that it was displaying something again..Such a bad product! too bad, software was "ok"