Wireless RV EZ LevelThe Camco Wireless RV EZ Level is the fastest, most convenient way to level your RV. It allows you to monitor your RV’s level in both axes simultaneously and has Bluetooth capabilities to display your RV levels on your smartphone or tablet. The EZ Level includes a free, easy-to-use mobile app, but can also be used without connecting to a device. Product features illuminated indicator lights—green means level; red indicates a low side. The EZ Level automatically shut off when it's not in use, extending the life of the (3) AA batteries (not included). Also features an on/off switch. The product is simple to operate and stow. Measures 8 5/16-inches (diameter) x 2 5/32-inches (tall).Features:Provides Fast and Easy RV Leveling: Allows you to monitor your RV’s level in both axes simultaneouslySmartphone Compatible: Bluetooth capable to display your RV levels on your smartphone or tablet; Includes a free, easy-to-use mobile app; The EZ Level can be used without connecting to a device. Requires iOS 9.3 or higher or Android 7.0 or higherIlluminated Indicator Lights: Green means level; red indicates a low sideFeatures: Automatic Shut Off Function plus on/off switch: Turns the level off when, not in use, extending the battery lifeBattery-Operated: Requires (3) AA batteries (not included)Simple to Operate and Stow: Unique design provides easy operation and stowing; Measurements: 8 5/16-inches (diameter) x 2 5/32-inches (tall)