After I had found and inserted batteries (3x AA), went first - nothing. After much guesswork about the instructions stated that in the transmitter the battery has been inserted incorrectly. In addition, the sender must have current, the battery can be inserted into the receiver again while pressing the button first. After this odyssey is the bell but reliably available. The supposedly waterproof transmitter depends on the yard gate - in case of failure, I will report here.
