Mini 6VDC Vacuum Air Pump Motor - 4.2mm Outlet, with wiring.
This vacuum air pump is built on a micro-motor that operates at 6VDC and is used for negative pressure applications and breast pumps. You must connect VCC to the pin with the red dot located next to it.
Specification
Rated voltage: DC 5V No-load current: 0.3A
Voltage range: DC 3V-6V
Maximum Vacuum: > -360mmhg
Weight: 60g
Dimensions: 27 X 58mm
Note
Recommended tube of 3mm inner diameter (Check related products)