It's listed & labeled — the thing fire codes actually require
U.S. fire and electrical codes don't ban heating appliances — they require them to be listed and labeled by a Nationally Recognized Testing Laboratory. LunchEAZE Junior is: it's certified to UL 1026 (electric food-serving appliances) and its battery to UL 2595 by TÜV Rheinland of North America, an OSHA-recognized NRTL, and it bears the cTUVus mark — the same legal standing as any NRTL listing mark. It is not an uncertified import; it's a listed appliance, engineered in California.