I want to make an automatic drainage system for ditches. When the water reaches a certain position, the pump will automatically drain water. What kind of liquid level controller is better?

We have used a water pump pressure controller before, which can start the water pump at low pressure and stop the water pump when it reaches the set upper limit. When the water is used up, it can also alarm to stop the pump and protect the pump. It has a LCD screen, which can be set up conveniently. Not to 200 yuan, I can't remember the model. I don't remember the previous code, but I remember what it was-S 910W water pump controller.