High-Precision Stepper Motor Peristaltic Pump With Adjustable Flow And Product Details Motor: Stepper motor Voltage: 24V Current: 1.8A Power: ? 45W Flow: 0-1800ml/min Current flow speed: 350rpm Rollers: 3 rotors Noise: 70dB Net weight: 1320g Product life: ? 6000H Temperature: 0-40? Humidity: Less than 80% Application:Experiment?Filling packaging?Laboratory?Research institutes?Food and beverage. Suitable for the transmission of viscous and non-viscous liquids with large flow. Compact structure, exquisite appearance, maintenance-free, using food-grade silicone tube This high flow 24v peristaltic pump can be used with the speed control board of the drive board to adjust the speed. If you need to buy the speed control board, please contact customer service for online consultation. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.