This is a really nicely design product. The best thing is the receiver unit is AC powered which makes install easy and no more worries about batteries dying after server months. With 2 receivers, you can put one upstairs and one downstairs which makes you will hear the bell anywhere in your home. The setup is clearly explained in the guide and very easy to follow. The entire setup will take less than several minutes. The receiver sound can be adjusted from very low volume to very high volume. You can also set the receiver to audio / audio+visual / visual notification.
