Item Type: Micro Diaphragm Pump Material: Engineering plastic Power Supply Voltage: DC6V Power: 3W Flowing Rate: 3L/min Negative Pressure: -50KPa Medium: Air Noise: <=60dB Package List 3 x Micro Diaphragm Pump (VN2708PM 1Made of engineering plastics, with explosionproof safety performance. The product is easy to install and provide much convenience to life 2This product is equipped with a pressure switch and an overflow valve to protect the pump from damage and control the normal operation of the pump. 3This product has the characteristics of low noise, corrosion resistance and high pressure. The product is small in size, owning strong structure, and long serving life. 4This product is easy to disassemble and assemble, and uses a safe low voltage to ensure safety. 5With wide applications, widely used in instruments and equipment, chemical industry, home appliances and other fields.