Whitman Controls is now a brand of Industrial Control Solutions as it has merged with Thomas Products.  Industrial Control Solutions is excited to expand its product offerings, improve its time to market on new and custom products, and continue to provide exceptional customer experiences.

Whitman Controls specializes in the manufacture of miniature pressure, vacuum, temperature, and liquid level switches and sensors.

Thomas Products specializes in the manufacture of premium flow and level switches & sensors.

The company prides itself on the diversity and quality of its product offering and the industry leadership position its brands have held for over 40 years.

As a Service-Disabled Veteran-Owned Small Business, Industrial Control Solutions believes in applying the same principles of military service to our everyday practices: tireless dedication, rigorous standards of quality, and faithfulness to our values and mission. This translates into providing a high quality product to exact specifications that always exceeds performance expectations.

Industrial Control Solutions is built on our extensive offering of high quality, customized switches and sensors. We can build and ship a sensor solution to your exact specifications in two weeks or less, with overnight shipping on in-stock models! Don't choose a competitor solution with inferior versatility and performance when we can take into account your application, media environment, and dozens of other specifications to meet all your performance and application needs.

At Whitman Controls & Thomas Products, we are fiercely committed to our clients, particularly those who have been loyal partners for the entirety of our 40+ years of existence. Most importantly, we never lose sight of the core values upon which the Industrial Control Solutions brand was built: high quality products with an unrelenting focus on customer service. Thank you for your commitment and loyalty to us over the years.

The Whitman Value

The Whitman Value - High Quality Switches, Fully customizable, with an unrelenting focus on Superior Service

Whitman Controls has been a leader in the pressure, vacuum, and liquid level switch and sensor industry for over 40 years. The Whitman Value is built on our differentiated offering of high quality solutions, and the ability to deliver product to EXACT customer specifications in two weeks or less. Off the shelf sensors limit an application's functionality and versatility - Why choose a competitor switch that results in inferior performance? We take into account your application and media environment, as well as all desired specifications to design a switch that will meet performance needs and exceed your expectations.

Quality switches and sensors, designed to customer specifications in two weeks or less, with an unrelenting focus on superior service - Together they add up to the Whitman Value.

ISO 9001 Certified - We Hold Ourselves, and Our Products, to the Highest Standards

Whitman Controls is ISO 9001:2015 Certified, which gives our customers the confidence that we hold our internal processes, and products, to the highest standards of quality and rigorous testing requirements. You can be confident that the product you receive has met all necessary regulatory requirements and will outperform your desired expectations. 

Experience And Knowledge, That's Invaluable.

Whitman Controls directs its years of design and manufacturing experience toward providing value-added services to our customers. These services can help you lower costs and increase efficiency. Our engineering team will work intimately with you and your team to design a switch that will maximize application performance no matter what the environment. In addition, our exceptional mechanical abilities allow us to perform additional assemblies and deliver more complete tested systems and subassemblies.

Diversified Product Offering - More Choices and More Savings.

We offer the most extensive pressure, vacuum, and liquid level solution offering in the industry. What does this mean for you? The ability to identify a switch or sensor that is suited perfectly for your application at a price that doesn't break your budget. At Whitman, we are constantly evaluating our input prices to identify savings we can pass along directly to the buyer. And we do all of this without sacrificing performance and quality. 

Numerous Choices & Additional Options - Have it your Way. 

Need additional wire on top of the 12" standard offering? Looking for a 1/4" NPT fitting instead of 1/8" NPT? Need Teflon tape or Loctite Vibraseal on your fitting? These are just a few of the numerous additional options that are available to customers on all our switch offerings. You have a need and we have an answer. All our switches can be customized to meet any end-user requirements.

At The Other End, Whitman Can Handle Wire Harness Assemblies Too.

As a UL and CSA approved harness assembly house, Whitman can do your next level of assembly. With our capabilities we can provide "value-added" benefits top to bottom. Whitman can guarantee leak free subassemblies and can handle a wide variety of switch mounts in customer designed systems. From T's to elbows, we will purchase and assemble parts and switches to your specifications.

We can do it at a price that will save you money. Call or email us today and we will give you a quotation on your assembly project.

Quality products, fully customizable, with a commitment to superior service. Together they add up to the Whitman Value.

Our Products

Whitman Control Pressure Switches

Pressure Switches

Whitman Controls Pressure Transmitters

Pressure Transmitters

Whitman Controls Vacuum Switches

Vacuum Switches 

Whitman Controls Vibrating Forks and Rods

Vibrating Fork / Rod Point Level Sensors 

Whitman Controls Level Transmitters

Level Transmitters

Whitman Controls Level Switches

Liquid Level Switches

Whitman Controls Liquid Level Switches

Temperature Sensors

Whitman Controls OEM Replacement Parts

OEM Replacements


We have had an exceptional professional relationship with Whitman Controls since we first started working with the company back in the mid 1990’s. We have most frequently purchased the J205 line of pressure switches, which have shown incredible versatility and durability across a number of our applications. The quality of the Whitman switches and their speed to executing on our specific requests is what separates the firm from competitors in the field. Customer service, from the sales team on new orders to the engineering team on discussing new designs, has always exceeded expectations.

Shaun Chapdelaine, National Field Technician, Airgas


Whitman Controls has been an excellent partner since we started working with the firm back in 2003. We have been frequent and consistent buyers of the W117, P119, J205, and J705 line of vacuum and pressure switches, as well as all manner of level switches, all of which have shown exceptional quality and exceeded our expectations. Whitman Controls outpaces peers in the quality of their switches, ability to meet customer needs quickly and efficiently, and by showing a strong commitment to superior service. There is an excellent working relationship between our two firms and we look forward to partnering with the Whitman family for many years in the future.

Senior Buyer, Auriema LTD


We have partnered with Whitman Controls for nearly 20 years, and a Whitman Vacuum switch was designed into our very first project. Since our initial interaction with the company, we have used a number of their switches in both our own OEM builds and several customer systems. The company prides itself on the quality of its products and a commitment to its customers, and we have always had a favorable experience.

Supply Chain Director, Leading Systems Integrator / Solutions Provider Design Firm

I was very impressed with the service that I received. I was very clear to me that I was important as a customer no matter if I was purchasing one piece or one thousand pieces. Good customer service hard to find these days. I was being told [competitors] don’t make it and there is nothing to replace it, or never have seen anything like that , to having tech support from the company that made the switch tell me they didn’t know how the one I have functions. When I called and spoke with Mike, after a couple of simple questions, Mike explained to me that he doesn’t have the one I have - but he does have one that will work for me and get the job done. He explained to me how to hook it up to do the job I need it to do. I went to make my order and sales made that process go smooth and for that I thank you both and it was a pleasure to do business with you all.

Chris Berthelot, Alternator Service Fort Worth TX

Industries Served

OEM Manufacturing

OEM Manufacturing

Original Equipment Manufacturing (OEM) and generalized manufacturing is the among the largest industries which Whitman has served over the years.

Thousands of equipment manufacturers use Whitman parts to ensure the quality and safety of their applications.

Oil and Gas

Oil & Gas

The fossil fuel industry is the backbone to the modern economy, and Whitman keeps it operating smoothly.

Oil & gas is still the largest energy producing industry in the United States, making its technology vital to the success of the American economy.

Alternative Energy

Alternative Energy

Alternative energy is constantly facing new and interesting application challenges. No matter how cutting edge, Whitman has parts for the job.

Energy is at the heart of everything our society does. Whitman pressure, liquid level, and vacuum switches are the right choice for customers who want long lasting, durable quality controls customized to their specifications.

Transportation and Vehicles

Transportation & Vehicles

Transportation Spending in the U.S. logistics and transportation industry totaled $1.48 trillion in 2015;

Whitman is a proud piece of the supply chain that goes into everything from rail equipment to agricultural equipment. Harsh environmental conditions, pressure spikes, and high vibration.



Heating, Ventilation, and Air Conditioning need to be reliable and monitored for building and critical environment safety.

Selecting your new control system for your HVAC system can be difficult and vary greatly from application to application, but whitman provides that gold standard in reliability and condition accommodation.

Food and Beverage

Food & Beverage Processing

The food & beverage industry has a long relationship with Whitman parts, our smooth surface stainless steel parts are both hygenic and durable.

Ensuring that levels never reach a critical low is easy with an automatic shut off relay.

We can ship same day on all in-stock items.

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