AL2 Low and high pressure alarm Alarm is activing when air pressure drops below functional level at 61.8mbar(0.89psi) or rises over 274.68mbar(3.97psi).
Diann Bao, Inc. was established in 1988 and since then has focused on designing and manufacturing of linear air pumps for aerobic wastewater treatment and environmental systems. After 2005 we stepped into the making of OEM and vacuum pumps for a broad range of medical, laboratory and industrial fields. AirMac, the brand of Diann Bao is reputed to reliable and highest quality to serve a wide range of applications, and has long been recognized by leading companies from the US, Europe, Russia, Asia—mainly in China and Thailand, and many from the world. We’ve been manufacturing and selling air pumps and vacuum pumps for over two decades.