Digital automatic water pump pressure controller for 220V systems, compatible with 12 mm, 15.5 mm, and 20 mm wiring or mounting options. This controller provides precise pressure monitoring, automatic pump protection, and easy adjustment of start and stop pressures for reliable water and air system operation. Key benefits - Prevents pump damage: built-in dry-run protection automatically stops the pump when water is absent, reducing risk of motor burnout. - Accurate monitoring: real-time digital display shows system pressure for precise control and easy troubleshooting. - Simple, fast setup: knob-style operation for convenient adjustment of start and stop pressure values. - Reliable performance: shock-resistant design with strong anti-interference characteristics, fast response, stable output, and low noise. - Intelligent auxiliary functions: delay, anti-blocking, anti-idling, and automatic repair routines reduce manual intervention and prevent frequent pump cycling. - Durable electronics: long electronic life rating up to 280000 cycles for extended service life. - Clear compatibility and capacity: suitable for 220V AC pump motors up to 1.5 kW with relay capacity rated at 220V AC 10A and active output. Technical highlights - Pressure range: 0 to 10 bar. - Rated drive power: 1.5 kW. - Supply and output voltage: 220V AC. - Relay capacity: 220V AC 10A. - Output type: active output. - Wiring: 3-wire configuration with white as positive, black as negative, and green-yellow as ground. - Plug type: international three-pin flat plug. - Optional mounting/wiring specifications: 2-point external wiring 12 mm, 3-point slip joint 15.5 mm, 4-point external wiring 20 mm. - Electronic life: up to 280000 cycles. - Package contents: digital display intelligent water pump pressure controller and user manual. Practical applications - Domestic water supply and pressure boosting: maintain stable tap water pressure and automatically control tank or booster pump operation. - Well and solar water systems: automatically start and stop well pumps or solar-fed pumps while preventing dry-run damage and reducing manual monitoring. - Equipment control: suitable for controlling solenoid valves, air compressors, and other devices that require pressure-based on off control. Why choose this controller - Solves common problems such as pump dry-run, inaccurate pressure readings, and frequent on/off cycling by combining precise digital display, adjustable set points, and multiple protective functions. - Fits a wide range of household and light industrial applications with clear wiring conventions and flexible mounting options. - Designed for dependable daily operation with fast response and long electronic life. This description covers the product specifications, core functions, and typical use cases to help determine compatibility and benefits for your water or air pressure control needs.