The GEPRC Super Buzzer is a beeper with its own battery that will provide an acoustic alarm even if the drive battery is disconnected from your copter. After disconnecting the battery, if you do not deactivate the beeper by pressing the button, a loud alarm will make sound. The battery is recharged from the 5V output on the FC and is thus completely maintenance-free. Searching in the dark will also be facilitated by the LED diode. During normal operation, the Buzzer works like a classic beeper and can be controlled via betaflight and turned on by radio.