Internal Sensor for Temperature Measurements in an Indoor Environment Wireless Transmission of Recorded Readings to iPhone & iPad Using Bluetooth Smart LE Communications -30°C to 70°C Measurement Ranges with a ±0.5°C Accuracy Non-Replaceable Lithium Battery with 1 Year Typical Life (1 Minute Sampling Rate) Stores up to 30,000 Measured Readings with Date/Time Stamp if Bluetooth Communications Not Available HOBOmobile App Available on the Apple Store and the Google Play Store