Clock with Intelligent Control: Alarm Once the configuration is complete, use the single button at the top to operate your alarm clock. The standard press to activate the high brightness backlight and snooze function. The process is straightforward, Third-party batteries not included. The Automatic Sensor in the Digital Alarm Clock allows for seamless operation by adjusting brightness based on ambient light conditions. This feature not only enhances user convenience but also adds to the overall energy efficiency of the device.