Enables intracellular calcium activated chloride channel activity; protein homodimerization activity; and voltage-gated chloride channel activity. Involved in several processes, including chloride transmembrane transport; detection of temperature stimulus involved in sensory perception of pain; and positive regulation of insulin secretion involved in cellular response to glucose stimulus. Acts upstream of or within regulation of membrane potential. Located in apical plasma membrane and external side of plasma membrane. Is integral component of plasma membrane. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; respiratory system; and sensory organ. Orthologous to human ANO1 (anoctamin 1). [provided by Alliance of Genome Resources, Apr 2022]