Light weight, portable and anti corrusion - Stainless steel and PPO composite materials used Motor protection - Built in thermo regulator stops the motor when it heats up Twin mechanical seal - Pump is enclosed in an oil filed enclosure, providing double-protection from thr water Wick safe cable seal - Seals the strand of cable conductors preventing water from entering pump when wicking Lubricant lifter - Auto supply lubricant to the seal when necessary extending mainteance intervals and lifespan Large solid passage - Pump impeller is fitted in a wide opened casing, enabling solids to pass through Automatic water level control - Built in water level sensor (only for MUS-A models)