Description: OOTDTY -Micro-pump is powered miniature for DC motor within mechanical eccentric motion, pushed by means of technique of an eccentric motion contained in the diaphragm reciprocates. -Whereby the chamber constant quantity of air compression (compression suction port is closed, the exhaust port is shaped to open barely nice pressure), stretching (compressed exhaust port is closed, a damaging pressure sucking mouth open), the pumping air intakes with the outside atmospheric stress difference, at a strain difference, the gas strain (suction) into the chamber, and discharged from the exhaust port. -Micro-pump is mainly used for medicine, fuel evaluation instrumentation and assorted fields. -Completely maintenance-free, and no oil do not pollute the transmission -Small, steady and reliable, hand-held instrument for pump-priming, low noise, low calories consumption. Especially appropriate for prime negative environmental requirements. Specification: Brand new Type: DC12V Mini Vacuum Operating DC9V ~ 14V Rated for DC 12V Positive pressure: 8000mmHG Negative pressure:-500mmHG Rated Current: 350mA Rated Power: 20W Suction capacity: 8L / min Inlet diameter:6mm Outlet diameter: 6mm Vacuum degree: 66kpa Maximum pressure: 120kpa Noise:<60db Size: as photo reveals Color: as photograph displays Package include: 1 Micro Vacuum