hmm, well, if you just use this transmitter, I think since it looses its reference point and starts wavering once the signal has stayed low or high for about 3 seconds, you would need to program a chip to interpret signals. You might want to go with a pre-made remote on-off set. That would simplify it and increase your range. This place has some stuff that might work: **broken link removed** but what you're trying to do will be somewhat difficult, making a receiver that works reliably and fits in a bracelet. If you still want that schematic I'll draw it up later, but you really can get almost everything I did from the dustsheets to those parts, available on the page I linked to earlier that supplies them. All I did was follow those schematics, and you'll need to read the data sheet to understand enough to adapt this to your purposes anyway.