Works as advertised. Easy to install. Couldn't be simpler. We have the bell receiver located in an addition about 50 feet from the transmitter. The signal has to go through two outside walls covered with aluminum siding (or it's bouncing through the house?). Works fine and solve our problem of not hearing the doorbell when working in that part of the house.Later: It's now been installed more than 3 years. Still works fine.