Heat Sensor

The manufacturer has expanded its Ultra line of bath fans and fan/lights with the addition of 16 models that feature humidity- or motion-sensing technology. Available in single- and multispeed models with or without lights, the fans operate at less than 0.3 sones while adjusting fan speed based on changes in humidity or motion. Broan. 800-558-1711. www.broan.com. Booth No. C5019.