Hand/Off/Auto (HOA) Controller :
Hand/Off/Auto (HOA) Controller :
The Vari-Green® HOA provides hand/off/auto functionality similar to a motor starter, enabling simple integration with building systems. In Hand mode, fan speed is set locally; Off mode stops the fan; and Auto mode allows remote control. Two Auto options are available: one enables remote on/off with locally set speed, and the other accepts a remote 0–10V signal for speed control. A 24V output is included to power external controls.