Founded in 1931 United Electric Controls, and its divisions, Applied Sensor Technologies and Precision Sensors, is a privately held corporation headquartered in Watertown, Massachusetts, USA.

We are an international manufacturer of durable and reliable Wireless HART Gas Detectors, pressure and temperature switches, transmitters, controls and sensors. Focused on providing protection to equipment, processes and personnel in a variety of industrial applications, our products range from simple units to highly specialized custom designs.

Many of our products principally perform alarm and shutdown functions for our customers, while others provide critical sensor inputs into control systems.

Our reputation for dependable, reliable products is a result of innovative design, superior manufacturing techniques, and a corporate focus on uncompromising quality.