I have one in front of me but I havn't played with it yet. Instead of the transitor switch just use the micro switch. It has both NO and NC switches so you have all the bases covered. On the corner is a double row of pins and 2 jumpers. VCC, GND, FT, P-L, P-E, REC marked next to the pins. Power it up from the battery to VCC+ and GND-. Push the REC red button to record using the onboard mic and play it back on ether the playe or playl button. I suspect the playL is maybe the loop button that will repeat the playback as long as the button is pressed. Once it is recorded and working you will have to experiment a bit shorting out the pins until you find the playback combination. VCC to pin? I would expect that to be what to start with. Maybe someone here has actually used one.