Extech 445713-TP Big Digit Indoor/Outdoor Hygro-Thermometer<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> External temperature probe: -58 to 158DegreeF (-50 to 70DegreeC) </span></li><li><span class="a-list-item"> Internal temperature sensor: 32 to 122DegreeF (0 to 50DegreeC) </span></li><li><span class="a-list-item"> Internal humidity range: 20% to 99% RH </span></li><li><span class="a-list-item"> Max/Min with reset function </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51l%2BdPD1TNL.jpg" noproxy>