Overview – The Physen wireless Doorbell comes with two doorbells and four plug-in modules. You can choose from 50 types of tones from traditional ding dongs to melodies to dogs barking. You could even use this device as a distress button as there are also alarm sounds and police sirens. Having two doorbells give you the option of another location like a side garage door or back door. The four wireless speakers allow you to place them throughout the house like the garage, basement, bedrooms or any other location you typically can’t hear the standard doorbell. For the installation, the kit supplies you with screws and double-sided tape.