Review on Wireless Doorbell, PHYSEN Waterproof Door Bell Chime Kit Operating At 1300-Ft Range 58 Adjustable Melodies 5 Volume Levels & LED Flash, Doorbell Alarm For Home/Classroom, 2 Push Buttons+4 Receivers by Bronson Hussain

Although we only needed three transmitter buttons, this was the only configuration that provided the three receivers that we wanted to install in the locations in our home where we wanted to place "panic buttons" to alert others that help is needed.Finding our preferred ring tones for our three button locations was tedious, but we followed YouTube programming instructions and in less than a half hour we had each button programmed to sound a different tone - and those three tones were consistent on the three receivers so we know which one is ringingWith the flexibility available in placing these, including no problems with the buttons on one level and one of the receivers in the basement, I would recommend this package - just take your time programming them.