Enables Intermediate conductance calcium-activated potassium channel activity. Involved in anion transport and potassium ion export across plasma membrane. Located in several cellular components, including apical plasma membrane; basolateral plasma membrane; and membrane raft. Human ortholog(s) of this gene implicated in dehydrated hereditary stomatocytosis 2. Orthologous to human KCNN4 (potassium calcium-activated channel subfamily N member 4). [provided by Alliance of Genome Resources, Apr 2022]