Fitted with a sensitive electrode that can detect water and begin to automatically activate even if foreign material is present, ideally suited if you need to drain a basement, a pool, a drain or empty tanks. An internal timer helps prolong the motors' life by stopping the motor from starting and stopping frequently. Other features include a rubber coated impeller and V-ring protector to guard against abrasive particles. Please note, this Pump is 110V and a transformer (available during the order process), or 110V site supply is required to use it.