"The manual listed for this product is wrong, it is for an LAP door chime and not the Byron. That being said, the correct connections for he battery powered chime to function are terminals 1 and 2. This information was gained through trail and error and frustration. The screws that come with the product are of very low quality. If you are screwing into a hard wood door you must drill a pilot first or the screw head will just twist off. My suggestion is to get a decent set of screws and use them instead. I used the turbo gold screws and they went into even my hard wood door very easily and without a pilot being drilled."