In order to establish a connection, you need a tablet or smartphone with
the testo App already installed on it.
You can get the App for iOS instruments in the App Store or for Android
instruments in the Play Store.
Compatibility:
• Requires iOS 12.0 or later/Android 6.0 or later.
• Requires Bluetooth® 4.0.
• Requires in testo 300 software version V12.7 or newer & firmware
version V1.10 or newer.