What Does UL Listed Mean?

When you’re working with electricity, safety and compliance are negotiable. Safety, though, begins at the component level, and that’s why you need to build a strong foundation by selecting UL listed products.

We get this question a lot: What does UL listed mean? Let’s explore the UL listed meaning, including what is UL, UL listed vs. UL certified, examples of UL listed products, and how Functional Devices uphold UL compliance.

At Functional Devices, one of our core values is being principled. That means we don’t cut corners with our products and build customer relationships based on trust. We’re principled in our compliance with safety regulations, even testing each device before it leaves the production floor. Explore some of our UL listed relays, and reach out to our engineers with any questions.

What Is UL?

UL Solutions, founded in 1894 by William Henry Merrill, Jr., is one of the world’s leading safety certification organizations. Formerly known as Underwriters Laboratories, UL’s mission is simple: to create a safer world.

The company provides certifications, testing, and auditing services across industries including automotive, construction, energy, healthcare, technology, retail, and more. With expertise that spans products, facilities, and personnel, UL’s reach makes it one of the most recognized and trusted names in global safety compliance.

“UL Listed” Meaning

A UL Listed product has been independently tested by UL Solutions to meet strict safety, quality, and performance standards, giving it credibility with regulators and customers.

For example, certifying a UL Listed relay involves:

• Submitting the product and documentation to UL
• Undergoing electrical, mechanical, and environmental testing
• Factory inspections to verify consistent production
• Earning certification once standards are met
• Ongoing monitoring to ensure compliance

This process ensures UL Listed products operate reliably and within verified safety standards.

UL Listed vs. UL Certified vs. UL Recognized vs. UL Classified

You’ve probably heard some different terms tossed around when it comes to UL, which can be confusing for consumers. Here are those terms demystified:

Why UL Certification Matters in Building Automation

When automating systems in your building, you want reliable and safe operation for obvious reasons. Without dependable lighting controls, HVAC, fire, and security systems, you risk downtime, low efficiency, higher operating costs, and more. Installing UL listed products gives you peace of mind that you’re purchasing a safe, compliant, reliable device. 

Beyond that, UL certification gives manufacturers market access and a competitive advantage, simplifies our inspection process, and ensures we always uphold efficient product development from the get-go.

Examples of UL Listed Products

UL Solutions certifies a wide variety of products from batteries to children’s toys to personal care items. Here are some UL listed products that are common in the building automation industry:

• Relays
• Sensors
• Power supplies
• Lighting controls
• Enclosures and control panels
• HVAC equipment
• Life safety and security systems
• Emergency lighting and power equipment
• Energy management equipment
• Fire and smoke control systems

Sometimes you may see UL followed by some numbers, which are simply the control or issue number. These designations help categorize UL listed products for quicker identification.

FAQs About UL Listed Products & UL Compliance

 Is UL Listed the same as UL Certified?
No. “UL Listed” means a product has been tested by UL Solutions and meets safety standards. UL Certified is an Enhanced Mark and means the product meets multiple standards.

 Do all products need to be UL Listed?
Not all, but many electrical and safety-related products must be UL Listed to comply with codes and regulations.

 How do I check if something is UL Listed?
Look for the UL Mark on the product or packaging. You can also search the UL Product iQ database.

How can I identify UL markings?
UL Marks include “UL Listed” or “UL Recognized” with a control or file number.

Are UL Listed products required by building code?
Often, yes. Many building and electrical codes mandate UL Listed equipment for safety and compliance.

Functional Devices and UL Compliance

Functional Devices uphold UL compliance in a variety of ways. Our dedication to “Made in America with Global Materials” simplifies our adherence to U.S. regulatory standards, including UL. We crafted our innovative “Relay-In-a-Box^®” design with safety and simplicity in mind, and many of our models are UL listed.

With the obvious benefits of UL certification, Functional Devices strives to meet and exceed compliance and safety requirements, reassuring our customers of our commitment to offering reliable, compliant solutions for building automation. Explore our UL listed devices. If you have any questions about safety or compliance, contact us to speak directly with an engineer.