IR-TEC PPU-300 Low Voltage Power Pack & BMS ControllerDescription The IR TEC PPU 300 is a versatile power pack and controller designed for low voltage lighting systems. It not only supplies 24VDC power for multiple occupancy sensors, but also allows for line voltage load switching based on signals from connected devices. The unit can be mounted in a junction box through a inch knockout with a threaded nipple and locknut, or placed in fixture cable trays or adjacent junction boxes for compliance with