In a statement from UL:
UL’s public mission is to promote safer working and living environments for all people. We make every effort to confirm that UL-certified products meet stringent safety requirements, including opening a Product Incident Report for any issue that comes to our attention.
Consistent with our usual policies regarding product safety matters, when UL received the alarm system claims, UL immediately opened a Product Incident Report and began an investigation.
During such investigations, certification documentation is reviewed, products are often re-tested, and if any issues are found, UL works with the product manufacturer to resolve the issues. In some instances, a public notice may be issued.
Based on the investigation completed thus far, no safety issues have been identified. The investigation is still ongoing.
UL sees no imminent hazard despite the assertions currently in the market. The current standards address reasonably foreseeable hazards, faults or misuse not intentional disablement of a life safety device. Those making claims have their own commercial interest in driving concern. The requirements being suggested around attack by fire and/or malicious intrusion are currently not mandated by the applicable standards or code. New suggested requirements could be brought to the attention of the Standard Technical Panel. Those making claims are part of the STP and have not brought suggested revisions to the STP’s attention to-date.