Part of a smart home–enabled product line developed by Panasonic and Swidget, the 20/40/60 Control Switch has a port that accepts a variety of Swidget inserts, such as a Wi-Fi control and an air-quality sensor, for remote or automatic operation of ventilation devices. A 4-wire interface allows for simple installation in single-pole or dry-contact applications. The switch has three timer settings—20, 40, and 60 minutes—that can be used without an insert. With a sensor insert, it can automatically turn a bathroom fan or an ERV on and off based on occupancy, air quality, or humidity.