Elitech RC-4 Temperature Data Logger, USB Recorder with Double Sensors LCD Display Buzzer Alarm

I've been using these devices since 2019 to monitor anything from boiler water temperature to domestic refrigeration. Perhaps the latter is the most impressive, not many devices can be left permanently at -22°C, very reassuring to see the freezers maintaining stable temperatures and that the monitor batteries last for years. I had been using a very old version of the upload software, and was so pleased to find the latest version, which is really good to use and capable of generating professional reports. I needed some more units so bought these recently; the two obvious differences over my older ones are the USB mini B connector being replaced by USB micro B, and the vastly faster download rate. Very pleased all round!

On a Win 10 laptop software would not run until I ensured that it installed into the Program Files folder. Out of the box it installed into C:\ElitechLogWin when to software would attempt to start but fail. Worked when forced to install into a folder within C:\Program Files. Then it all worked.

The thermometer is very simple to use with minimal setting up. I used it to help diagnose a boiler fault and the ability to record and display the boiler return temperature solved my problem within the first day. I cannot comment on the calibration as I was more interested in temperature change. The software is simple to use and allows exporting of data for more detailed analysis if required. The only thing to note is that whilst it has two sensors (one internal and one using the probe), only one of these is active at a time.

Werkt uitstekend. De mogelijkheid om een externe temperatuurvoeler aan te sluiten gaf de doorslag in de keuze voor dit product. Alle denkbare instellingen zijn mogelijk (in mijn toepassing). En de prijs ..... Een meer dan uitstekende prijs kwaliteit verhouding

Super simple to setup and use. Can't speak to longevity since I've only had them a few days but wow super simple and just running with the default setting of one reading per 15 minutes logged suits my needs just fine. The SW does it's job but is not super flexible (I would have liked for example an ability to annotate the line charts with notes on key events along the way but alas). All in all, highly recommend if you have a need to simply monitor temperature. I never calibrated mine, checked accuracy against a reference, or even verified repeatability but, the data I'm getting looks plenty reasonable to me so I'm declaring it good enough and supposing that the unit is within the rated spec. My initial use was to monitor temp of my fermentation process for home winemaking (I and NOT recommending dropping the sensor into your must - I did not do that) so for that purpose seems like this'll serve me well for years. I'll probably find lots of uses for these little gems now that I have them (bought two).