Oregon Scientific THGN123N Ultra Cold Temperature and Humidity Sensor at $29.95, works with selected weather instruments to provide you with temperature information down to
-40 degrees Fahrenheit!
This rugged white 3-channel sensor transmits temperature and humidity information up to 100 feet (unobstructed) and is water resistant. The sensor monitors temperature to -4 degrees Fahrenheit when powered by alkaline batteries or to -40 degrees Fahrenheit when lithium batteries are used.
Compact sensor is either wall-mountable or can be used free standing for easy placement anywhere.
Features:
3 channels
Monitors temperature and humidity
Operates from -40 to 140 degrees Fahrenheit when lithium batteries are used (not included)
Water resistant
Transmission range up to 100 feet (unobstructed)
The sensor is wall-mountable or free standing for table or desktops
Instructions included
Power source is 2 AA alkaline batteries (included)