The passage detector works so far quite reliable, but I miss very much an on / off switch on the transmitter. One can only shut down these when taking out the batteries. And I do not need him 24 hours a day. Thus, that is out of operation pull me annoying and might by a switch outside (rear) be resolved at the transmitter much better. The batteries in the transmitter "suffer" thus namely unnecessary. But otherwise I'm happy with it.
