Here is a smart sensor that lets you record temperature and easily access the data on your iOS or Android device. The InTemp CX-403 Bluetooth Data Logger has a measurement range of -30C to 70C. It runs on AAA batteries for about a year. The CX403 also has a LCD display to show the temperature.
Thanks to the InTemp Gateway app, you will be able to set remote alarm notifications. This smart temperature sensor is available for under $130 at this time.[where to get it]