Palm

As a user, I want to power ON the device so that it can measure the UV Index periodically.

As a user, I want to power OFF the device so that it can power down completely to save battery consumption.

As a user, I want to switch ON the wireless BLE so that it can transmit the data to another BLE device.

As a user, I want to switch OFF the wireless BLE so that it can stop transmitting the data to another BLE device.

As a user, I want to view the changing colors of the on-board RGB LED so that I know the current range of UV Index.

As a user, I want to view the numerical values of the UV Index and battery level data on another BLE device so that I know those values accurately.

As a user, I want to hang the entire keychain through the M6 drill hole so that I can be hands-free when outdoors.