167 Whistle controller schematic?

Details:

Here is a Sound Activation/Block Protection Box .

Add an in line momentary switch for Reverse.

Thanks a bunch for the help!

All you really need for a whistle, bell, or whistle & bell controller is a bunch of diodes and a switch or two.

Yes but until i knew which to put where that didn't do me any good.  But now I can decide if I want to build my own or buy an used one. I will keep the group updated and post pictures if i go with DIY.

Here's a simple whistle & bell box I build from parts in the junkbox.  The switches could be SPST push-buttons, and the diodes I used are 3A, but I'd recommend probably going with the 6A ones for regular use.  This does both the whistle and bell functions.