Boveda Smart Hygrometer for Humidors, Herbal & Music | Measures RH and Temperature With Auto Alerts to Your Phone | Easy-to-Use Calibration Kit Included | App for iOS/Android | 1-Count;

BOVEDA BUTLER, THE TOTAL HUMIDITY MANAGEMENT SYSTEM. WHY THE BOVEDA BUTLER IS THE MOST PRECISE HUMIDITY MONITOR ONE WORD: CALIBRATION. The Boveda Butler is the only humidity monitor equipped with the Boveda One-Step Calibration Kit. The only way to ensure your container readings are truly accurate is with a well-calibrated Boveda Butler. Chemists and lab professionals determine the accuracy of a hygrometer with a "salt test." The Boveda One-Step Calibration Kit is the ultimate salt test. In just 24 hours, you can perfectly calibrate your Boveda Butler's digital hygrometer. HOW DOES THE BOVEDA BUTLER WORK? It resides in your container-right on top of your cigars or it can be affixed to your humidor's lid with the included velcro strips. The Boveda Butler communicates via Bluetooth to the free Boveda app on your iOS 10.0+ or Android 5.0+ mobile device. You can now access your humidor's conditions all the time, without opening the lid.