Product review (5 stars): Great product when needed.
This has turned out to be an excellent addition to an upgraded dryer vent. The unit is installed close to the exit end of a 35 ' run. Straight forward installation. There have been enough posts on wiring the sensor and I found it very simple & easy. Fan is quieter than the dryer so is unnoticeable and has greatly increased the efficiency . Previous drying time of a load of towels - 45 minutes twice, now 30 minutes once. A secondary lint trap is a necessity .