The PS-04D is an automatic water pump controller (also known as an electronic pressure switch) .It is designed to automate and protect water pumps in residential, agricultural, and industrial systems.Key Features and SpecificationsAutomatic Operation: Starts the pump when a tap is opened (pressure drop) and stops it when the flow ends.Dry-Run Protection: Automatically shuts off the pump if no water is detected, preventing motor damage.Built-in Pressure Gauge: Allows for real-time monitoring of system pressure.Durability: Rated IP65, making it dust-tight and resistant to water jets for both indoor and outdoor use.High Capacity: Supports a maximum current of 30A and a maximum power of 2.2 kW.Pressure Rating: Can handle a maximum working pressure of 10 bar.