Robust electronic instrument housing made from aluminum die-cast alloy (durable yet easy to work with). The overlapping design provides protection against dust ingress and splashes, while also enhancing EMI/RFI shielding. Includes screws that are screwed into factory-threaded holes. The type and number of screws may vary. The standard versions meet the IP54 protection rating. The waterproof versions comply with IP65 and include a gasket that is supplied loose in the housing (not pre-installed).