Buzzers are a great safeguard to add on any drone. This small investment can save you hundreds of dollars. The super loud alarm will alert you to where you lost your quad.
The hellgate is a buzzer with a battery that will make the battery beep for a period of time until the batteries dies. This is very helpful when your battery is unplugged from a crash.
Matek Tail light WS2812B & Loud Buzzer is a quick way to add lots of lights and sound to your rear end! Dual modes of operation mean it can be controlled by your FC or your transmitter.