Please design, manufacture and sell a really loud LMA that can be triggered from an unused channel.
Or from a selected spare channel if using sbus.

Sell for about $10

Thanks.

This works fantastic at USD 7.99
http://www.lostmodelalarm.com

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Oxy 2 ♦ X-Vert ♦ Warp 360 ♦ Blade 450X ♦ Blade 450X Nightflyer ♦ Goblin 500 (RIP) ♦ 2 X mCPX v2 ♦ night fly mQX ♦ LadyMQX ♦ nano QX ♦ nano QX FPV ♦ Inductrix ♦ DX8 G1

Thanks for this link !

Just we need the Spirit can have one more channel, like the spirit pro...

$14 delivery!

Is it possible to pass though a sbus channel signal to a spare servo port on the spirit ?

I can then connect that channel to a buzzer.

Hello.
Yes, with Spirit Pro it is possible - F: Output to CH0
But usually you can do so also with a Futaba receiver. If it is 4 channel receiver, you can program it to output higher set of channels instead of channels 1, 2, 3..

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Spirit System developer

I don't have the pro, I have 2x red spirits. Is it possible with these?

With non-Pro you have to use a receiver with a free receiver port.

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Spirit System developer

Can't. Using FrSky xsr

Guys, for the passive one you don't need a dedicated channel. Use a Y with any servo, say, rudder, and the thingy will start shouting after one minute without a change in the signal or signal loss. Very practical.

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Oxy 2 ♦ X-Vert ♦ Warp 360 ♦ Blade 450X ♦ Blade 450X Nightflyer ♦ Goblin 500 (RIP) ♦ 2 X mCPX v2 ♦ night fly mQX ♦ LadyMQX ♦ nano QX ♦ nano QX FPV ♦ Inductrix ♦ DX8 G1