This is a DC air inflator or tiny air pump. This is a little air pump that may be used to give oxygen to aquariums and other DIY projects. Any controller, such as Arduino, Raspberry Pi, AVR, PIC, or any other controller, can control it. The pump is simple to put together, has a simple interface, and is a low-power device. SPECIFICATION Operating Voltage 4.5V to 12V DC Operating Current Max. 430mA Rated Power 1.5W ~ 2W Air Leakage 3.0mmHg/min Pressing Time 11.5s Maximum Pressure 400mmHg Dimension 65.4×26.8mm Nozzle Outer Diameter 4.2mm Country of Origin China