Thread: New Product Hobby King EPP FPV plane
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Old Jun 11, 2012, 10:46 AM
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Here is one from HK (no PVC) but same basically.
http://www.hobbyking.com/hobbyking/s...ne_Finder.html


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Originally Posted by Tony97 View Post
I will try to post a picture of my siren. It is basically a very small siren in a piece of PVC tube. It about 1/4" wide by 4" long tube. It has a servo plug on the end. It monitors a valid signal from the receiver. If I signal pulse is detected, the siren goes off. Once the pulse width is valid, it shuts off the siren. Very simple and these are commercially available.
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