Measure and record surface temperatures with more confidence and functionality than ever before. The RYOBI Phone Works mobile app and Infrared Thermometer device provide new mobile innovation to turn your phone into a smart Infrared Thermometer. The RYOBI Phone Works system harnesses your smartphone's technology to take temperature measurements between -22°F and 662°F in real time, set temperature ranges with alert function, and switch easily between Celsius/Fahrenheit readings. All functions are controlled from your phone screen where the free app displays an image of your test surface and digital temperature read-outs. The app also allows you to capture high-definition images and videos, share readings through email and social networks, and file temperature data for future reference. No more temporary read outs or handwritten notes to keep up with. Get temperature measurements with more functionality and confidence with the RYOBI Phone Works System. RYOBI Phone Works – Transform your phone into your smartest tool. -- Apple is not endorsing or sponsoring this product. Apple, the Apple logo, iPhone are trademarks of Apple, Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. The Android App on Google Play logo and Google Play are trademarks of Google, Inc.