The control and alarm parameters of the unit can be modified via on-board jumpers. A Flash microprocessor allows selectable settings to control temperature and fan-alarm trigger speed, as well as 24 or 48 Vdc operation and isolated on-board power.

The device accepts dual-power feeds ranging from 30 to 75 Vdc. Maximum fan current is 4 A (still air) and 5 A (air stream) at 55°C. Soft start and current limiting at start-up are included.