I gave a 3-leaf rating, because when the kit was out of stock, I incorrectly assumed that I was actually buying another receiver and transmitter as separate items. Instead what I ordered was an "addable" transmitter and receiver. I may gift to someone who already has a main.

Reply by our customer service

Dear customer ,thanks for your kind reviews .Any quality issue ,could you contact our customer service for help ?You could reach them by calling 1-866-979-7463 or sending online live chat (from Monday to Friday )or sending an email inquiry to us (any time ). We are more than happy to help you here .Best regards

some of the tone selections sound a bit buzzy from the mini speaker

Quite large. Will have to use third party sticky tape for easy removal If I ever need to move it. Doesn't fit on my brick wall. The Audio sound is loud enough to be heard in our 3 story 2700 square feet home. Many sound options.