Review on SadoTech Waterproof Wireless Doorbell: 1000 Ft Range, LED Flash, Battery Operated - Perfect For Home Use by Jason Hood

I needed a delivery bell of sorts at the end of my very long driveway. This fit the bill perfectly. Over 300 yards away, works like a charm every time. The choice of songs and bells is certainly suitable. My only complaint, and it's a rather small one, is that it isn't quite loud enough. It allows you you set a volume level, but the max doesn't quite make it super noticeable with a ton of other noise like music or TV. it's a pretty small unit though, so I think it's performing well within it's capabilities. I actually liked it so much I bought a second one and have two button terminals connected to the same chiming unit inside. It even allowed me to set a different chime for each button. All together fantastic.