Mengshen® USB Temperature Humidity and Air Pressure Data Logger with Digital Display and Built in Alarm for User Set Readings Thermometer...<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Quick &amp; Easy Monitoring - Digitally Measures and Saves Temperature， Humidity &amp; Barometric Pressure Readings </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Instantly Save， Recall &amp; Review Data via PC Computer (USB Port Connector) - Temperature  Range: -40 to 221°F </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Programmable Recording Time Intervals - Alarm Function - Temperature Setting LED Light Alarm Indication </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Save &amp; Record up to 12，700 Thermometer/Hygrometer/Barometer Data Entries - Battery Operated (3.6V Included) </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> LCD Display - Temperature Accuracy: +/-2%， Humidity Range: 0% - 100% RH， Barometric Pressure Range: 10-1200 mbar </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41v9QcGzXtL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31-6SNE5MVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41I1h56lzDL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/3115jMxJg6L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41j4O326EML.jpg" noproxy>