Enables potassium:chloride symporter activity. Acts upstream of or within several processes, including chloride transport; learning; and thermosensory behavior. Located in dendritic shaft; neuronal cell body; and plasma membrane. Is expressed in several structures, including central nervous system and retina. Used to study epilepsy. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 34 and idiopathic generalized epilepsy 14. Orthologous to human SLC12A5 (solute carrier family 12 member 5). [provided by Alliance of Genome Resources, Apr 2022]