Freshliance 50packs Temperature Data Logger USB Disposable Temperature Recorder with 30000 Points, Auto PDF CSV Reports High Accuracy 90days Single Use for Frozen Transportation Cold Chain Fresh Tag 1

Worked well. Used it to measure freezer temps. I assume it is accurate and was worth thee price.

I have been using these for a couple of years now and I'm happy with them. It's cheap insurance and they're priced right compared to a standard Ryan and many other temp recorders.

SINGLE USE ONLY. Only activate when you want to use it. No where on description and box does it say single use only. Also decieveing that there is a "on/off" button that they repeatedly write about letting you think you can turn it on and off.

Update: there is a 10 minute delay, and then these start to record. Also, if not in the temp range they will blink red every :30 instead of green. This could be better explained in the instructions. The delay info is written on the side so if you’re not careful it could be easily missed as it is obscured by the film bag that these arrive in. Otherwise they are simple to use. Held start button for 5 seconds as told, 3 green flashes, then yellow “delay” flash every 30 seconds for about 5 minutes, then single red flash every 30 indicating not recording. All 10 of these were the same, my experiment is compromised.

I used this temp logger to monitor the temp inside of an outbuilding over the winter months. The logger was easy to set up following very clear instructions. Because the environment was dirty and potentially wet, I left the logger in it's plastic bag. I was able to view the reports within minutes. Note that this is a one time use logger. Any unused "space" is lost once it is turned off.

I prefer the report in both PDF and Excel, also include temperature units of ℃and F. It is very convenient to analyze data for what I used it for.

It’s very useful and fast delivery 👍

Seems to work great, but the description did not make it clear enough that it is one time use only. As soon as you plug it in to get data you can no longer use it. So I went to check data after three days. Now it no longer will record. Single use only.

Primero me llegaron abiertos de la bolsa hermética en la que vienen, hice la devolución y ya llegaron bien, me imagino que fue un tema de aduana. Cumplen bien con su función.