Great idea using a 12 volt 3 yr battery instead of AA, 2032,... or similar shorter term. Compact size fits nicely on a double gang receptacle outlet. Bad news is that the 55 tone/tunes available will make a 7th grade music instructor & student cringe. Anchoring (selecting) one chosen other than ding or ding dong ( choices #1 and #2) can be problematic. Many of the other choices (my endurance ran out) are lengthy attempts and pretty racketing. I ordered this for side door use into my garage wood shop so I can live with some of the shorter tunes and I know nothing about music. But I do know I won't order another one to replace my home bell. Choices above include Motion Detection. There is no Motion Detection feature that I can find in this device or its literature. Speaking of literature, the User Manual needs to be written by someone with a primary English language or a 9th grade technical journalism background. Probably both.

I bought this doorbell and was hoping it was worth a try but I was wrong there was a card with the company email address and it said if you are not completely satisfied with your order they would gladly refund your money.so I was very disappointed in the quality of this doorbell its kind of like the prize from a box of cracker Jack's so I emailed them and they wanted my order # so I sent them that next day had a email from them because I bought it from tanga not Amazon they said they couldn't refund me anything only if I had got it from amazon I can't believe they put a card they said they stand behind their products so what if I bought it from tanga not Amazon its still the same product same company. They don't stand behind their products. Don't waste your money or time.