I Liked the idea of adding a small buzz and maybe I could connect it to the 5th to 7th channel of my receiver, not being used in my trainner and activate with the landing gear switch.
I already crash landed once and took me some time to find it.

I just bought the receiver voltage monitor weeks ago and installed in my trainner. It's a VU indicator with leds that you can fix in the fus and cut a small strip in the fus for the led to be seen from outside, even when flying close to the runway. I found it very usefull. It cost bout $15


Nilo