AIS240A-35 is a multi-purpose switching unit, consisting of six, four pole relays for a total of 24 poles of switching capabilities. The relays are arranged in a group of four (16 poles) and two single relays (4 poles each). The relays can be activated by either a ground or 28 Vdc, maximizing installation flexibility. As with our whole family of AIS switching units, the AIS240A-35 uses gold plated dry contacts that are sealed in nitrogen filled cases.The rugged construction of the AIS240A-35 , makes them ideal switching units for both fixed wing and helicopter operations.