Originally Posted by Red__Zed

It does not. The transmission is inversely proportional to received power level.

I've taken one of the fobs apart and actually played with the circuitry. Where do you gather that the transmission level is fixed?

Originally Posted by ChrisSlicks

When I took mine apart I didn't identify anything that could control the transmitter power. Are you saying you actually measured the output? I didn't go as far as actually probing the circuit so if that's the case it is interesting. But I'll still keep the key in my pocket and replace the $1 battery when the time comes.