★Simply plug into the vacant connector (Image 2) and secure to the servo, etc. ★How to use = Although there are individual differences due to Chinese quality, it's not too noisy. In case of a crash, it's best to visually locate it, approach, and then quickly repeat throttle on/off. It's effective and reduces frustration during seasons when the aircraft is buried in grass or snow. I've spent over 20 minutes searching before, but after attaching this, it's usually found within 30 seconds. ★Low price due to simple functionality. It starts beeping around half throttle. It beeps continuously during flight, but it's not very noticeable as it doesn't consume much power. Since it's turned on by operation, it won't beep continuously after a crash, preventing battery drain during late-stage crashes, and since it can be turned on at will, there's no waiting. It's recommended to secure it to the elevator servo or skids with double-sided tape or zip ties. For indoor hovering, simply unplug the connector, making indoor adjustments less troublesome. ★Please understand that this is amateur craftsmanship. It will be tested for operation during creation and packaging. It might be a good idea to secure the wiring so it doesn't dangle when detached. The wires are soldered to the metal pins coming out of the main unit, and it seems that bending the metal pins 90 degrees is not a problem. Buzzer part approx. 9x4.5mm, approx. 1g. ※Wire colors are random, so please check the holes and pins. ※In rare cases, if the aircraft's volume is broken, it may not beep or may beep continuously. It is recommended to test its operation by connecting the tail motor beforehand. ★We do not accept price reduction requests. ※The item for sale is everything shown in Image 1.