PLC Multipoint PP-900-AX Power Pack Controller w/ Auxiliary Switch Input, 120/277 VAC, 16A Line VoltagePLC Multipoint PP 900 AX PP 900 AX Product Description Cadence power pack controllers transform incoming line voltage power to Class 2 low voltage as needed by sensors or other control devices. Additionally, they switch on off power to the connected lighting load as directed by the sensors and controls. Cadence power packs utilize a powerful microprocessor to optimize its switching timing in order to ensure long relay life even when controlling high