Water Pump Shimizu PS 135 E and Shimizu PS 128 BIT. What is the difference?

Shimizu PS 135 E and Shimizu PS 128 BIT water pumps. Is a water pump for shallow wells with a depth of 9 meters. However, the Shimizu PS 135 E is equipped with automatic and tube so that for PS 135 E just by opening the faucet the water will automatically turn on and when the faucet is closed the water pump will turn off. Thanks.