FPV JHEMCU JHE20B Finder BB Ring 100dB Buzzer Alarm with LED Light Support BF CF Flight Control Parts for RC Micro Drone Quad

The Buzzer has two modes of operation:
1. It supports the functions of the traditional active buzzer and synchronized with the flight control.
2.When the flight controller is connected normally, if the main flight battery is off, it can still automatically emit 100dB of drip sound after 30 seconds of power failure, and the LED will emit white light.How to turn off the doorbell:
Press and hold the release button for more than 2 seconds, the JHE20B finder turns off the sound.The JHE20B seeker is compatible with all BF and CF flight controls. Just connect to the buzzer interface of the flight controller and it will work. When the flight control wiring is correct, the multirotor aircraft is on, and the flight control power supply will automatically charge the JHE20B seeker (the red LED will light up to indicate that charging is in progress, red LED off means that the charge is saturated; flashing red light means flight controller is off, Wait 30 seconds.