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Review title: Don't understand the problems of others
Product review: I bought two of the PE120 to replace old Firex units. As someone else said, it's really the only choice for old Firex replacement unless you want to replace all of the units.I am happy with the two PE120 I purchased. They integrate with the Firex system without hassle. I did have to change out the plastic mounting ring, and the electrical connector, but that was to be expected. It's only two screws, and 3 wires to connect. If you aren't comfortable with doing your own wiring, you would have to call an electrician.I have never had a false alarm from these units. I test and clean them regularly, so maybe that is the secret.I am going to purchase another one to replace another old Firex unit.
