Check the listing for details. 1/4 1/8 Adjustable Vacuum Negative Air Pressure Switch Vacuum Pressure Switch. Condition: New. Listed at 19.80 USD. 1/4 1/8 Adjustable Vacuum Negative Air Pressure Switch Vacuum Pressure Switch Feature:1: Electrical parameters: 16 (4) A 250VAC T12516A 125/250VAC 5E42: Applicable medium: Non harmful gases, vacuum pressure.3: Applicable air sources: positive pressure (blowing), negative pressure (suction)4: Maximum pressure: 1.0MPa5: Interface size: conventional G1/8, G1/4 (threaded interface)6: Control mode: on/off mode7: Electrical principle: SPDT1: Electrical Parameters:16 (4) A250VACT12516A125/250VAC5E42: Medium:Non hazard team, pressure,LiquidBodypress, oilPressure3: Highpressure:Positive pressure: 1.5MPaNegative: -100Kpa4: Externalthread:G1/8, G1/45: ControlType:SPDT: On, Off6: ElectricalLife:6A250V100000 times10A250V50000 times