This is a tiny (2.3g) lost model alarm with integrated battery. Once you attach this to your quad it can help you find your drone if you have a bad crash as it will beep and flash for up to 12h to help you locate your quad.
FullSpeed Lucky Box Beeper Buzzer 90dB 5V Built-in Battery for RC Drone FPV Racing
Brand name: FullSpeed
Item name: Lucky Box Beeper
Input Voltage: 5V
- A Working Buzzer after Battery Ejection
Lucky Box Beeper is designed with a built-in battery that gives it the power to sound an alarm even after the quad battery was disconnected.
Lucky Box Beeper charges itself simply by being plugged in.
- Adapt to Any Flight Controllers
Lucky Box Beeper is programed to be compatible with any model flight controllers. Just connect it to FC and fly it.
1 x FullSpeed Lucky Box Beeper