OTTO Switch Box Board / Switch Assy (YA00031829) for Hitachi ZX200-5G / ZX250LC-5B excavator - mounted on the pump, the valve block, or in the harness run to the cab. It switches hydraulic flow electrically or reports machine condition back to the controller. Supplied as an OTTO replacement, checked before packing, with 3-12 months warranty options. Send us your machine serial and a photo of the old part and we will confirm fitment before dispatch.