D'Addario Humiditrak - Bluetooth Humidity and Temperature Sensor
The best-selling D'Addario Acoustic Guitar Soundhole Humidifier makes it easy to properly and safely humidify your guitar.
Humiditrack is a device equipped with Bluetooth technology and a Bluetooth sensor that monitors the humidity and temperature inside the case of your valuable instrument. When undesirable conditions are detected, the device immediately alerts you with a message sent to your iPhone/iPad; the Humiditrak app can be downloaded for free.
The device works with Apple iOS devices with Bluetooth 4.0 (iOS 7 and above), i.e. iPhone 4s and above, iPad Mini, third and fourth generation iPad, iPad Air and fifth generation iPod Touch, as well as devices running Android 5.0 and above. You can download the app from the links below.
iOS: https://itunes.apple.com/us/app/humiditrak/id1079088449?mt=8
Android: https://play.google.com/store/apps/details?id=com.blustream.humiditrak