UL stands for Underwriter Laboratories, a third-party certification company that’s been around for over a century. UL was founded in 1894 in Chicago. They certify products with the aim to make the world a safer place for both workers and consumers. Besides testing, they set industry standards to follow when innovating new products. Last year alone, about 14 billion products with the UL seal entered the global marketplace.
In a nutshell, UL is a safety organization that sets industry-wide standards on new products. They continually check these products to ensure they’re up to these standards. UL testing makes sure that wire sizes are correct or devices can handle the amount of current they claim to be able to. They also ensure that products are constructed correctly for the highest safety.