The TrolMaster EFC-1 is specifically designed to be used with the Tent-X Control System to control the variable speed of the EC Fan. The EFC-1 needs to select the output mode to control the EC Fan in PWM or 0-10V.

Each Tent-X can connect a corresponding EFC-1 for Exhaust (F1) and Intake (F2). Each Exhaust (F1)/Intake (F2) line requires one EFC-1.