Digital Thermometer Hygrometer Humidity Monitor Probe for Egg Incubator

I have purchased one from Ebay.
Here is what it looks like.

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So far it seems to be working very well, same readings as my other thermometers. It has a nice big screen and long cord with the sensor on the end.
Here is the Ebay link that I use to purchase the unit.

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I have seen other units that look the same that are cheaper on Ebay too.
Here is a link.
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I was wondering what everyone else is using, please post away.

I will up date this first post to let everyone know how the unit is working.

Kimball.

My husband bought me a little digital hygrometer that reads the temperature as well. It seems to be working pretty good. It sits in the bator with the eggs.