iO HVAC Controls iO-LL Lead/Lag ControlleriO HVAC Controls iO LL Lead Lag Controller Description This versatile 24 volt Lead Lag Controller offers balanced operating time between 2 redundant devices. The iO LL is microprocessor controlled. Status LEDs indicate the controller is powered and which piece of equipment is currently being energized. The iO LL can be used on HVAC equipment, industrial equipment, heating equipment, cooling equipment, fans, pumps and motors. Additional Information
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