Jrifedptry 1 Piece Super Loud 5V Buzzer Tracker over 100DB Built-in Battery LED Self-Power Black & Red PC+Metal for Finder 2 for FPV Racing Micro-Long Range LR4

3. LED flash automatically when darkness - The built-in light sensor can detect light intensity and then smartly control the LED light to It be very helpful to find the quad in darkness. 1. Work as both normal and standalone buzzer - for Finder 2 can work as a standard buzzer that be controlled by your radio. It also can beep automatically when it detects the main battery has been ejected. 2. Super loudly, 110dB volume - for Finder 2 installed a very loud beeper that the volume is almost 110dB, it is much louder than standard buzzer. 4. Be compatible with both FPV quadcopter and RC Airplane - for finder 2 is programmed to be compatible with any flight controllers to support FPV quad, and receivers for RC airplane, Manufacturer: Jrifedptry