Hi,
I have two BWS688 transmitters for one BWS688 receptor. One BWS688 transmitter works, but the other does not work. This is not a range question, as even if the BWS688 is placed very close to the main station (receptor), its signal is never received (or at least interpreted in some way). This is not a battery problem: I checked with new batteries. The red `RF REMOTE SENSOR' lamp lightens from time to time, just as with the other transmitter.
Thanks.