Series 310 eSafe Multi-Link With multiple outlets Series 310 eSafe Multi-Link offers both flexibility and high performance. Available in 1- to 5-outlet units. A small unit can be expanded with extensions to create a larger unit with up to five outlets. Separate units can easily be connected. Combine with CEJN polyurethane hose and FRL units to create a safe and flexible high performance air distribution system. Series 310 eSafe Multi-Link complies with ISO Standard 4414 and EN 983 and it offers standard features; one-hand operated, high flow and long service life