Oregon Scientific THGN123N Ultra Cold Temp/Humidity Sensor

This temperature and humidity sensor can transmit data in even the coldest temperatures. When used with 2 AAA lithium batteries (not included), this sensor can transmit temperature and humidity data up to 100 feet, and will operate even at -40 degrees F. Has an easy-to-open battery cover and can transmit on one of three different channels. Please check sensor compatibility with your main unit before purchase.

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