Enzymes catalyzing the dehydrogenation of secondary amines, introducing a C=N double bond as the primary reaction. In some cases this is later hydrolyzed.

Synonyms: EC 1.5.-, Secondary Amine Oxidoreductases, Oxidoreductases Acting on CH-NH Group Donors, Amine Oxidoreductases, Secondary Amine, Amine Oxidoreductases, Secondary, Oxidoreductases Acting on CH NH Group Donors, Oxidoreductases, Secondary Amine