Review on ETZ Doorbell Red Black Adjustable by David Edwards

I was as skeptical as I could be but we needed something to train our new 6 month old puppy because she had some accidents when we brought her home. After introducing her to the bells and ringing her for the first few days she was at the door before we let her out, I was of course typing on my computer in the next room and heard the bell ring. I walk in and she gets up and looks at me at the door, waiting for the exit, then sticks her nose out again and looks at me again. I opened the door and she immediately went out and she has been doing that ever since. We even took her on holiday when we lived in an apartment without a garden so that she would let us know when she needed to go for a walk. That's great!