This TE Connectivity switch is designed for use with treadmills from various brands, including FreeMotion, Weslo, Universal, Proform, NordicTrack, HealthRider, and Gold's Gym. The switch is made of plastic and is compatible with the Tyco W51-A161A1-15 and TE Connectivity W51-A161A1-15 models. It is suitable for use with gym and training equipment, and is made in China.