I have been looking for months for a good refrigerator to store insulin at home, in a way where I have some reasonable certainty that it won’t freeze. I finally decided that the best type was probably a wine chiller, since it as important to expensive wines as it is to insulin that it never freeze. But I could not find a model that I liked and that also got good reviews.
I think I just found the right model: https://www.amazon.com/Westinghouse-WWT120TB-Electric-Adjustable-Thermostat/dp/B00N6RG19I/ !!!
It is made by Westinghouse (in China) and is a thermal electric cooling system (not a compressor). Its cooling range is 46-66, which means I would set up at its minimum temperature at all times. The 46 degree minimal temperature is marginal for storing insulin, so I hope the nominal temperature range will be reasonably true to reality.
The bad thing about thermal electric cooling is that it fluctuates more because it does not have as much power as a compressor. The good thing is that it uses less power, and there is no inductive machine in it, so I think I will be able to power it through an Uninterruptible Power Supply. That is particularly good because I live in power failure country.
I just ordered it on Amazon! I will test its temperature range with a recording thermometer and see how well it does. Then my next step will be to find a temperature alarm that can notify my cell phone if it gets out of range.
I am pleased as punch, and crossing my fingers that it will work well.