Most helpful positive review
26 of 28 people found the following review helpful
Easy connection for older pre-wired homes. 3 wires and done!
on February 1, 2013
The description indicates this unit is an easy install for older pre-wired homes. That is what drew my attention. The installation was a snap. The buttons lit up and functioned without a hitch. No batteries needed. If you need a transformer or a new button, include them in the order to save shipping costs. When you install any new electronic part, tag the wires or make a drawing when removing the old part so you won't get confused.
I neglected to say that this model is an exact replacement for the bell that failed in my home. Externally, the cover is different, but internally the mechanism is identical. The bell is machanical. It uses "hammers" to ring two-tone tubular bells. It is not a recording. One tone for the back door and both tones for the front door. There are only three electrical connections. Transformer (one pole), Front door (one pole), and Back Door (one pole). It is a very simple unit.