Features: This DC pump uses advanced electronic components and high-quality wear-resistant shaft. It offers smooth operation, high efficiency, reliable performance, and long service life. Designed for continuous operation with low noise, safe and environmentally friendly. Widely used in industrial, scientific research, and aerospace applications. Usage: Connect the pump cable (red wire is positive do not reverse polarity) to an appropriate power source (battery or power adapter), attach the water tubing, and submerge the inlet into water. The pump will then operate normally. Note: This DC brushless pump is a centrifugal type. Flow rate decreases as head pressure increases. Not self-priming and must not be run dry. Do not operate without water. Specification: Name: Water Pump Material: Plastic Color: Black Inlet/Outlet: 1/2 inch male thread Voltage: 12V DC / 24V DC Maximum Rated Current: 1000mA Power: 22W Max Flow Rate: 800 L/H Max Water Head: 5m Max Circulating Water Temperature: 100C Size: Approximately 6.5cm (D) x 8cm (H) Notes: 1. Do not reverse the positive and negative connections. 2. Do not connect directly to a 220V power supply without a proper power adapter. 3. Do not use with strongly acidic, alkaline, or corrosive liquids. 4. Suitable for liquid temperatures between 1C and 100C. Package includes: 1 x Water Pump