Product Feature: Environmentally friendly, silent design Safe: IP65 waterproof case with water-shortage protection Intelligent: Automatically prevents frequent pump restarts Reliable: Electronic design for long life, over 200,000 operations, anti-vibration Wide application: Suitable for pipeline pumps, booster pumps, self-priming pumps, submersible pumps, circulating pumps, and more. Commonly used in solar heat pump systems, air-source heat pumps, WILO home booster pumps, Grundfos hot water circulation pumps, and other compatible systems Tip: Four branch pipes, 20mm diameter Material: Plastic Color: As shown Package Contents: 1 x Water pressure pump Note: Other items not included. Light reflection and display differences may cause slight color variation between image and actual item. Measurement allowance: +/- 1-3 cm