Quality product that just worked out of the box. It was able to extend the Ring WiFi network through two plaster walls and across approximately 5 metres of open space. My "doorbell" is at the front gate and this chime/extender is halfway down the hall inside. It truely is a great product in a small package. I have yet to find any negatives about this device.
This works but it can be a bit sensitive especially if your front door faces a road. I have found it works well and I can answer any door ring from my phone which means I am no longer bothered by the local god bother's who feel they now have a right to recruit. It's a good system for the money.