DIY DC Peristaltic Micro Liquid Pump with Stepper Motor, Silent Circulating Water Dosing Pump, Self-Priming for Analytical Aquarium Laboratory (4)

Specification: Condition: 100% Brand New Item Type: Peristaltic Pump Material: Stainless Steel Motor Type: 42-wire 2-phase stepper motor (A+AB+B- line sequence, requires a driver to operate, not a direct power supply) Motor Voltage: 3-50V Motor Step Angle: 1.8° Drive Current Setting: Continuous operation is recommended <1A, short-term operation is recommended <1A, current is as low as possible when torque is sufficient to reduce heat generation Maximum Power: 20W Minimum Power: 5W Stepper Motor Speed: Recommended speed is less than 500 rpm (stepper motor speed is determined by the control circuit) Weight: Approx. 418g / 14.7oz Pump Head Size: Approx. 6.6 x 5.6 x 2.4 cm / 2.6 x 2.2 x 0.9 inches. Pump body size: approx. 4.1 x 4.1 x 3.7 cm / 1.6 x 1.6 x 1.5 inches. Pump tube replacement: 1. Loosen the adjusting nut. 2. Open the pressure block. 3. Install the pump tube. 4. Press down on the pressure block and insert the adjusting nut. 5. Adjust the nut to the appropriate tightness (if the adjusting nut is too loose, water will not be pumped. The tighter the adjusting nut, the higher the lift and the shorter the lifespan of the pump tube, so it can be adjusted clockwise). Package list: 1 x Peristaltic pump