Accessories and Parts -RC Plane DIY Lost Alarm with JR Highlights Generic Brand RC Plane DIY Lost Alarm with JR Description: 100% brand new and high quality This alarm buzzer is used for airplanes, helicopters, multicopters, it helps you find your drones when they are out of control and lost anywhere you can't find them easily by naked eye Special sound, it is easily distinguishable from the noise all around Suitable for: AM system/ FM, FM/PCM PPM Power Supply: Receiver BEC Specification: Connect alarm between servo and receiver, ie act as a servo extender. Turn on your TX. and you will hear 2 beeps. Do not move any control stick on the TX or just turn off the TX. You will hear a continuous beep after 1 minute. It will stop once you turn on your TX or move the control stick. If you ignore the continuous beep sound for about 2 minutes, the beep sound will change to the louder V sound. You must disconnect the alarm from the receiver to turn off the alarm. MAKE SURE THE CORRECT POLARITY BEFORE TURNING ON THE TX Size Chart: Size: approx. 13x17x12mm/0.51x0.67x0.47inch Package Include: 1 Piece Aircraft Search Tracker Alarm (2 Pack)