BroadSensor’s COD whose extreme installation depth is 10 meters under water can be installed vertically or horizontally in drop-type. Remembering to fix it in water, keep no barrier around the brush and no foreign substance twining round the brush. It is suggested to select BroadSensor’s COD protection cover to avoid foreign substance’s twining round the brush and resulting in motor invalidation. The motor fault led by foreign substance’s twining will not be covered by the 12-month warranty.