Wireless Temperature & Pressure Sensors & Mobile App. 
The SMART Pro/R temperature sensor includes:
1 sensor, 1 CR123A battery, 1 spare battery cap, 2 reusable cable ties, 1 sheet of labels and an
instruction sheet.

What type of device is required to read the sensor? Apple iOS devices & Google Android OS devices
that have Bluetooth Low Energy capability are able to communicate with the SMART Pro/R sensors.
This includes the Apple iPhone 4S or newer, iPod touch Gen 5, & iPad 3 or newer (including Air and Mini), & many Android devices running Android 4.3 or newer. The device must also be updated to the latest operating system.