Enables potassium channel activity. Involved in potassium ion transport. Is integral component of membrane. Human ortholog(s) of this gene implicated in autosomal dominant nocturnal frontal lobe epilepsy 5 and developmental and epileptic encephalopathy 14. Orthologous to human KCNT1 (potassium sodium-activated channel subfamily T member 1). [provided by Alliance of Genome Resources, Apr 2022]