VCC-X EM1 Expansion Module Includes: VCC-X EM1 Expansion Module mounted in plastic enclosure and EBC E-BUS cable. The EM1 Expansion Module adds Title 24 Economizer Feedback and modulating Chilled Water control. It also provides 3 analog outputs for controlling a Return Air Bypass Damper and a Return Damper in Return Air Bypass applications. It also has 5 configurable relay outputs. It connects with an included EBC E-BUS cable to the VCCX2 Controller. EBC-XXXF "WATTMASTER EBUS" "WATTMASTER EBUS" EBC-XXXF 37X04 1.2 1.6 4