EMUFO-40170-YY is an emergency backup battery pack designed specifically for UFO high top lights, which has been UL listed in the U.S. and Canada, and complies with UL924 and CSA C22.2 NO.141 standards, ensuring that it can automatically provide stable illumination for UFO high top lights in case of emergency. The product features high output voltage, low energy consumption (CECTitle20 compliant), constant output power, self-testing, and battery over-temperature protection. It supports on-site or factory installations, and users are advised to perform regular inspections and maintenance to prolong the service life of the battery packs and to ensure that they work properly at critical times.