PDI DP-110 Handheld In-Duct Digital Psychrometer， Blue<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Measures Wet Buld， Dry Bulb or Relative Humidity</li><li>MAX/MIN Function</li><li>2-year warranty</li><li>Blue back light</li><li>Auto Power Off</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31gb0pWitzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31N45sgs79L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31w-ZnZq3nL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41KrIIsbBYL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51JNd6jp9PL.jpg" noproxy>