White-Rodgers 90-113 Single Pole Double Throw (SPDT) Fan Control Center is a transformer and relay combination for easy installation on a 4" x 4" junction box. Line voltage connections are pre-wired. Features an energy limiting class II transformer design and color coded pre-stripped leads. Includes low voltage connections on terminal board. Provides low voltage control of fan motors and auxiliary circuits in heating, cooling or heating/cooling systems. Transformer Primary Input Voltage: 120VAC/60Hz. Transformer Secondary Input Voltage: 24V/40VA. Replacement Relay Model Number: 90-340. Switch Action: SPDT. Coil Current: 0. 40A. Coil Input Voltage: 24V. Contact Rating (Full Load): 120VAC/13. 8A. U. L. Approved adjustable dial stop, factory set at 90°F maximum.