SpeedyBee FPV Drone Buzzer, Alarm Beeper with Internal Battery Beacon LED 110dB Alarm for F405 F7 Flight Controller GPS Tracker FPV Drone Airplane

Work as intended, really loud beeper. Only draw back is turning it off after every flight. Happy with this purchase.

MUST BE USED W FLIGHT CONTROLLER. You cannot plug this directly into a spare pwm port on a standard RC receiver. I was hoping to use this to find a flyaway plane but you cannot. If you assign it to a channel on your tx, you can trigger the alarm remotely and it will turn on w a crash where battery is ejected BUT, you cannot turn the buzzer off once turned on w the assigned switch. This means if you accidentally hit the switch on your tx while flying or on the bench, the alarm starts and will not turn off or reset unless you physically hold down the button on the unit. Lame. My last beacon can be turned on AND off w an assigned switch, I was hoping this one would too but I found out too late that it is designed to take signal from a buzzer port on a flight controller.

Easy to install and so far works pretty well. I’ve took a few crashes as well and still functions.

The module transmits a very large tone when activated. Good buy.

This little beeper can be a life saver for finding a lost drone. GOS or drone footage can get you close to the last known location, but sometimes actually spotting it can be a real challenge. Dead battery, drone busted, gps lost, whatever it is, this thing will still work. Whenever the battery is removed for to long it will go off. To get it to stop, simply replug the battery briefly or press the button on it. With its battery backup and screaming beeper someone somewhere will certainly find the dang thing. The beeper is EXTREMELY loud and I wouldn’t want this to go off inside your home. I also personally wouldn’t use this as your primary buzzer because it’s east piercing loud. It’s fairly easy to install and wire up, I think you can even omit the buzzer- and just wire 5V and ground. Overall it’s a great inclusion for any quad where you might be worried about losing the it.

Since the inclusion of one of these all in one beepers on a RTF long range quad I bought some years back, I have come to love them on all my RC multi-rotors. The weight penalty of this unit is basically negligible, even on sub-250 craft. These beepers are even more important on smaller craft since seeing them is harder, especially in trees and heavy undergrowth. This unit is plenty loud and the built in LED is great when the sun starts to fade. Installation is a snap on most modern flight controllers. For the price and the weight, these are cheap insurance as far as I am concerned. Highly recommended.

Im not sure how or why it happened but I bought one it came in the mail and looked fine, soldered it to the speedy bee f405 v3 fc stack and seen the button on the side so i held it down and it made a continuous long drawn out beep till it killed the tiny battery it came with, so I deconstructed it a little taking the clear shrink wrap and desoldering battery off and powered it straight from the fc on the proper pads now it works fine and can control it completely using beta flight, maybe mine was just a bad fluke, just glad i know how to solder.

No fun!.

Not even close to 50 db. Same sound as the motors do.