United Electric Controls



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United Electric Controls is a privately held corporation that has been in operation since 1931. Headquartered in Watertown, MA, UE is a leader in the design, manufacturing and application of Threshold Detection and Switching™ technology. Our products protect people, valuable equipment, the environment and processes in a wide variety of industrial applications by monitoring pressure or temperature conditions and performing critical alarm, control and shutdown functions of equipment or processes according to the customer's needs.

Our specialty is to provide a wide variety of highly reliable products designed for use in either stable, indoor locations, or in hazardous, and the most hostile outdoor conditions. If you can't find what you need here or in our catalog, please call us at 617-926-1000.

In addition to our design capability, United Electric is a leader in the use of lean manufacturing techniques in all of our manufacturing processes; we are certified to ISO 9001 and operate in an environment of continuous improvement as reflected in our customer oriented Quality Policy.

Is saving money important at your company? UE customers save a lot because our efficient lean manufacturing system enables us to ship products very quickly. Swift delivery from UE directly translates into major savings due to much lower customer inventory and higher turnover. Why pay for unwanted excess inventory caused by long lead times and undependable delivery? At UE, we deliver what you want when you want it. We will be glad to put you in touch with some of our long term customers so that you can hear first hand about their experience with us.

We welcome many visitors each year to our world-class, award-winning manufacturing facility. Factory tours are available for UE customers, distributors and partners. Please contact us directly or your Regional or International Sales Manager to arrange a visit.

Sales and Technical Support

United Electric provides strong technical customer support to assist our customers in the specification and use of our temperature and pressure switch products. Complete application, installation and service assistance is available at the company headquarters, as well as through our regional sales managers and trained authorized distributors located throughout the world.


Our engineering staff is also always available to work directly with customers to help furnish solutions to meet your unique application requirements.

Company Website

Featured Products

  • United Electric's One Series Safety Transmitters
    • The One Series Safety Transmitter has won Control Engineering’s coveted 2015 Engineers’ Choice Award in the Process Safety category. This spotlight on innovation chooses the best automation, control and instrumentation products from 26 categories. Voting was conducted during the 4th quarter of 2014 and the winners were announced in Control Engineering’s February 2015 magazine issue earlier this year.

      This award is testament to the countless hours spent researching and developing the One Series Safety Transmitter to create a product that truly resonates with customers. The One Series Safety Transmitter is certified for use in SIL 2 safety systems, similar to competitive process transmitters that are currently available. In that sense, this product provides the customer with a very familiar device to implement their safety instrumented system – a transmitter.UE included a safety relay output (SRO) providing the ability to switch or control the final element (valve, compressor, blower, pump motor starter or other devices to alert workers of a critical condition) directly from the transmitter, providing the resonating feature that the Engineers’ Choice Award recognizes. Additional discrete outputs that provide set point and health status facilitate redundant and diverse safety system designs which no other competitive transmitters offer.  Customers found that having this flexibility allows them to achieve SIL certification in non-traditional ways that reduces design, acquisition, commissioning, and certification cost while increasing reliability without the need to deploy a costly logic solver. Regardless of a brownfield or greenfield project the ST provides more value than traditional transmitter.The One Series Safety Transmitter achieves the highest safe failure fraction (SFF) of any currently available SIL 2-certifiedtransmitter. At 98.8%, this very high SFF showcases UE’s extensive IAWTM UE is Working on self-diagnostic capability used to provide maximum safety and reliability while reducing risk to the lowest possible level.  Many customers do not understand the significance of this and may need to be educated.  Simply, SFF refers to the diagnostics that will uncover 98.8% of all the faults possible with the Safety Transmitter.  It ensures that if the customer delays the annual proof test, our device will me more reliable than any other. 

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