## [The Code Authority® Newsletter - Jan. 2026](/thecodeauthority/news/code-authority-newsletter-january-2026) # The Code Authority® Newsletter January 2026 Explore this month’s articles on updated product safety requirements and trends from UL Solutions experts. ![The Code Authority Header - Large](https://delivery-p133222-e1298791.adobeaemcloud.com/adobe/assets/urn:aaid:aem:2f6c1cdd-f6ea-4138-92bd-a40dcca4fc02/as/2f6c1cdd-f6ea-4138-92bd-a40dcca4fc02.webp?&smartcrop=Landscape&max-quality=90&width=400) *play\_arrow* *pause* ## Breadcrumb - [ *keyboard\_arrow\_left* The Code Authority® ](/thecodeauthority) - [ Home ](/) *pen\_size\_1* - [ The Code Authority® ](/thecodeauthority) *pen\_size\_1* - News *pen\_size\_1* - The Code Authority® Newsletter - Jan. 2026 Developed by industry specialists with an unbiased stance on the requirements needed to enable a safer built environment, The Code Authority® (TCA) newsletter provides relevant updates from UL Solutions on topics of interest to authorities having jurisdiction (AHJs), inspectors, code officials, tradespeople, educators and industry professionals across the fire, electrical, security and building sectors. Enjoy the articles below and join in the conversation with the TCA community on [LinkedIn](https://www.linkedin.com/groups/4474689), [YouTube](https://www.youtube.com/playlist?list=PLFOTaIrtQbw_8VJTsDJpx6LKy1pGbFW9-) and [Spotify](https://open.spotify.com/show/7fNQKYStEe3remSTyXDvrn?si=b4a0892903dd42af). ## Safety Considerations for Plug-In Photovoltaic (PIPV) Systems Learn about the unique hazards of plug-in photovoltaic (PIPV) systems and how they differ from traditional PV technology in this UL Solutions white paper. [ Learn more ](https://www.ul.com/insights/safety-considerations-plug-photovoltaic-pipv-systems) ![TCA Article Image](https://delivery-p133222-e1298791.adobeaemcloud.com/adobe/assets/urn:aaid:aem:9f5b7850-a3df-4c23-8fb0-5b90faf28841/as/9f5b7850-a3df-4c23-8fb0-5b90faf28841.webp?&smartcrop=Landscape&max-quality=90&width=400) ## High-Frequency Ground-Fault Circuit Interrupters The 2026 edition of the National Electrical Code® introduces high-frequency rated ground-fault circuit-interrupters (GFCIs) to improve safety and compatibility with modern appliances using power conversion technologies. [ Learn more ](https://www.ul.com/thecodeauthority/knowledge/high-frequency-ground-fault-circuit-interrupters) ![AC outlet installed on a tile wall background](https://delivery-p133222-e1298791.adobeaemcloud.com/adobe/assets/urn:aaid:aem:0a59c2c1-1cff-435c-b993-519799fc7ea0/as/0a59c2c1-1cff-435c-b993-519799fc7ea0.webp?&smartcrop=Landscape&max-quality=90&width=400) ## UL Solutions Warns of Unauthorized UL Marks on Carbon Monoxide Detectors Important product alerts: UL Solutions warns of unauthorized UL Marks on detectors. [ Learn more ](https://www.ul.com/news/ul-solutions-warns-unauthorized-ul-marks-carbon-monoxide-detectors-0) ![Counterfeit mark carbon monoxide detector](https://delivery-p133222-e1298791.adobeaemcloud.com/adobe/assets/urn:aaid:aem:f9c52847-0185-4c9e-9c01-8ee71e9379a1/as/f9c52847-0185-4c9e-9c01-8ee71e9379a1.webp?&smartcrop=Landscape&max-quality=90&width=400) ## UL Solutions Issues Warning Over Rooftop Fans Bearing Unauthorized UL Certification Marks Safety certification marks were falsely applied to extractor fans for food trucks and trailers, posing potential risks. [ Learn more ](https://www.ul.com/news/ul-solutions-issues-warning-over-rooftop-fans-bearing-unauthorized-ul-certification-marks) ![Counterfeit mark rooftop fan](https://delivery-p133222-e1298791.adobeaemcloud.com/adobe/assets/urn:aaid:aem:fef349e1-0402-43e5-b098-2b0f09e2274e/as/fef349e1-0402-43e5-b098-2b0f09e2274e.webp?&smartcrop=Landscape&max-quality=90&width=400) ![Online Webinar Meeting At Chemical Plant. Videoconferencing](https://delivery-p133222-e1298791.adobeaemcloud.com/adobe/assets/urn:aaid:aem:524edf34-618d-47ee-aec3-9d8d1720feab/as/524edf34-618d-47ee-aec3-9d8d1720feab.webp?&smartcrop=Portrait&max-quality=90&width=400) ![UL Solutions](/modules/custom/ul_component/components/brand_element/assets/brand-element-positive/mobius.svg) ![UL Solutions](/modules/custom/ul_component/components/brand_element/assets/brand-element-reverse/mobius.svg) ## Explore the latest TCA trainings Access our catalog of trainings from The Code Authority®, covering building, fire and electrical safety for inspectors and code authorities. [ Access trainings ](https://ultraining-ahj.myabsorb.com/#/public-dashboard) ![Bruce E. Johnson](https://delivery-p133222-e1298791.adobeaemcloud.com/adobe/assets/urn:aaid:aem:846262ac-d103-46f7-8e57-64c6c02b56e6/as/846262ac-d103-46f7-8e57-64c6c02b56e6.webp?&smartcrop=Square&max-quality=90&width=400) ### Bruce Johnson Bruce is the managing editor of The Code Authority® newsletter and brings his passion for fire and life safety, along with over 30 years of experience, to his role as regulatory services manager at UL Solutions. [ Read bio *arrow\_forward* ](https://www.ul.com/about/people/bruce-e-johnson) ### Join the Code Authority® community Science is pushing forward. We’ll make sure you keep up. Subscribe to The Code Authority® community to receive updates on new articles, courses and learning opportunities. [ Sign up *arrow\_forward* ](/thecodeauthority/community) ## More from The Code Authority® ![Library](/modules/custom/ul_component/components/brand_icon/assets/brand-icons-positive/library.svg) ### Knowledge Center Explore a comprehensive hub of resources designed to help keep you informed and code-compliant. [ View resources *arrow\_forward* ](/thecodeauthority/knowledge) ![Teacher teaching](/modules/custom/ul_component/components/brand_icon/assets/brand-icons-positive/teacher_teaching.svg) ### Events Discover where our codes and regulatory services experts will be presenting or attending meetings. [ View events *arrow\_forward* ](/thecodeauthority/events) ![Person with hard hat inside shield](/modules/custom/ul_component/components/brand_icon/assets/brand-icons-positive/person_with_hard_hat_inside_shield.svg) ### Experts Our team of experts brings extensive, cross-industry expertise and is ready to help you overcome the challenges you face in the field. [ Meet our experts *arrow\_forward* ](/thecodeauthority/meet-our-experts) The Code Authority® (TCA) newsletter is developed by industry specialists who have an unbiased stance on the requirements needed to enable a safer built environment. For further information or questions, please [contact UL Solutions](/contact-us).