| Company | Title | Standard |
 | AH LIGHTING - LOS ANGELES, CA USA | Smoke Alarms | UL-217 Ed.8 |
 | BELLMAN & SYMFON GROUP AB - Askim, SWEDEN | Smoke Alarms | UL-217 Ed.8 |
 | EI ELECTRONICS LTD - Shannon, County Clare IRELAND | Smoke Alarms | UL-217 Ed.8 |
 | DEVELCO PRODUCTS USA INC - Palo Alto, CA USA | Smoke Alarms | UL-217 Ed.9 |
 | EVERDAY TECHNOLOGY CO., LTD. - YILAN, TAIWAN ROC | Smoke Alarms | UL-217 Ed.9 |
 | SYBER SENSE IOT CO., LTD - TSUEN WAN, Hong Kong SAR CHINA | Smoke Alarms | UL-217 Ed.9 |
 | SITERWELL ELECTRONICS CO., LIMITED - Ningbo, Zhejiang CHINA | Smoke Alarms | UL-217 Ed.8 |
 | LUNA INNOVATIONS, INC. - Blacksburg, VA USA | Smoke Alarms | UL-217 Ed.8 |
 | SNAP ONE, LLC - Charlotte, NC USA | Smoke Alarms | UL-217 Ed.9 |
 | EXIGENT SENSORS, LLC - Garden Grove, CA USA | Smoke Alarms | UL-217 Ed.9 |
 | APPLIED FIRE TECHNOLOGIES LLC - Coppell, TX USA | Smoke Alarms | UL-217 Ed.9 |
 | XIAMEN HI-LIGHT LIGHTING CO LTD - XIAMEN, Fujian CHINA | Smoke Alarms | UL-217 Ed.8 |
 | RELY INNOVATIONS INC. - Eau Claire, WI USA | Smoke Alarms | UL-217 Ed.9 |
 | ALULA, LLC - St. Paul, MN USA | Smoke Alarms | UL-217 Ed.8 |
 | GENTEX CORPORATION - Holland, MI USA | Smoke Alarms | UL-217 Ed.9 |
 | XIAMEN HI-LIGHT LIGHTING CO LTD.. - Pico Rivera, CA USA | Smoke Alarms | UL-217 Ed.8 |
 | EYSTON CO., LTD. - Chai Wan, HONG KONG | Smoke Alarms | UL-217 Ed.8 |
 | RESIDEO LLC - Melville, NY USA | Smoke Alarms | UL-217 Ed. 10 |
 | RESIDEO LLC - Melville, NY USA | Smoke Alarms | UL-217 Ed.8 |
 | RESIDEO LLC - Melville, NY USA | Smoke Alarms | UL-217 Ed.9 |
 | RESIDEO LLC - Melville, NY USA | Smoke Alarms | UL-217 Ed. 9 REC |
 | RESIDEO LLC - Melville, NY USA | Smoke Alarms | UL-217 Ed. 8 REC |
 | SHENZHEN HEIMAN TECHNOLOGY CO., LTD. - Shenzhen, Guangdong CHINA | Smoke Alarms | UL-217 Ed. 10 |
 | ANKER INNOVATIONS LIMITED - Hong Kong, CHINA | Smoke Alarms | UL-217 Ed. 10 |
 | SITERWELL ELECTRONICS CO., LIMITED - Ningbo, Zhejiang CHINA | Smoke Alarms | UL-217 Ed.9 |
 | SITERWELL ELECTRONICS CO., LIMITED - Ningbo, Zhejiang CHINA | Smoke Alarms | UL-217 Ed. 10 |
 | VANEMAR INC. - Fort Lauderdale, FL, USA | Smoke Alarms | UL-217 Ed. 10 |
 | TUNSTALL HEALTHCARE (UK) LTD - Yorkshire, UK | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | SAFEAWAKE LLC - Columbia, MD USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | SPRUE SAFETY PRODUCTS LTD. - Gloucester, UK | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | QOLSYS INC. - San JoseCampbell, CA USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | AMERICAN MEDICAL ALERT CORP. - Pawtucket, RI USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | MTI INDUSTRIES INC - Volo, IL USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | CLARE CONTROLS LLC - Sarasota, FL USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | SERCOMM CORP. - Taipei, Taiwan ROC | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | APOLLO AMERICA INC. - Aburn Hills, MI USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 REC |
 | TRUWATCH INTERNATIONAL LLC - Saukville, WI USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | X-SENSE USA LLC - Wilmington, DE USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | SIMPLISAFE, INC - Boston, MA USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | YE JACOBY LLC - Brooklyn, NY USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | CLIMAX TECHNOLOGY CO., LTD. - Taipei, Taiwan ROC | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | RESIDEO LLC. - Melville, NY USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | NTD IMPORTS, LLC - CARROLLTON, TX, USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | APOLLO AMERICA INC. - Aburn Hills, MI USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | AH LIGHTING - LA, CA, USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | ADVANCED SAFETY ELECTRONICS LLC - Mount Pleasant,, WI USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | XIAMEN HI-LIGHT LIGHTING CO LTD - XIAMEN, Fujian CHINA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | EYSTON CO., LTD. - Chai Wan, HONG KONG | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | MENARD, INC. - WI, USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | RESIDEO LLC - Melville, NY USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | RELY INNOVATIONS INC - EAU CLAIRE, WI USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | FEIT ELECTRIC CO., INC. - PICO RIVERA, CA USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | FEIT ELECTRIC COMPANY - PICO RIVERA, CA USA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | X-SENSE ELECTRONICS CO., LTD - Dongguan, Guangdong PRC | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | SITERWELL ELECTRONICS CO., LIMITED - Ningbo, Zhejiang CHINA | SINGLE & MULTIPLE STATION SMOKE ALARMS | UL-217 |
 | KIDDE SAFETY - Bradenton, FL USA | Smoke Alarms | UL-217 Ed. 10 |
 | KIDDE SAFETY - Bradenton, FL USA | Smoke Alarms | UL-217 Ed.9 |