Schneider Electric (Square D) 9999SC2 Hand/Off/Auto Selector Switch

The Schneider Electric Square D 9999SC2 Hand/Off/Auto Selector Switch is a multifunctional control device used to manage HVAC systems. Users can manually choose between the Hand, Off, and Auto operating modes with this switch. While the Auto mode allows the system to operate automatically based on predefined parameters, the Hand mode gives the user direct control over the system. As its name implies, the Off mode stops the machine from working. This selector switch offers versatility and convenience in system control and is compatible with a variety of HVAC equipment, including air handling units, boilers, and chillers. The 9999SC2 provides both manual and automatic operating choices, which improves user control and guarantees effective HVAC system performance.