@Haswill Electronics offers
1. Temperature data recorder, suitable for food and pharmaceutical cold chain;
2. Thermometer, suitable for home, aquarium, and industry;
3. Electric plug-and-play temperature controller (pre-wired), panel temperature controller, suitable for freezer, heating device, aquarium, fermentation, etc.

Whether you buy from Haswill or other suppliers, we believe you will get free help from our videos.

Please note:
Our videos do more than just show you how to operate the device; we strive to help you understand the underlying principles and parameter definitions so you'll know how to handle various problems.

We will not directly answer your specific questions.
Thus, please watch the video carefully. You will learn the thought process and logic.
Once you understand the content of the video, you will immediately find the answer to most of your questions yourself.

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haswill.electronics+yt@gmail.com