Px2 Advanced Light Controller PH Up & Down The Apollo® 8 24 The Apollo® 8 24 hour timer is the perfect timing solution for your hydro systems Getting accurate temperature readings on engines precise and independent controlsThe PX2 provides independent control of the following features in each of its dual zones: Photoperiod timing to control light and dark cyclesPhotosynthetic photon flux control to precisely schedule the PPF being emitted from fixtures during the light cycle (wattage or percentage)Auto dimming when temperature exceeds set pointsEmergency auto shutdown of lights upon user defined over temperature eventsConfigurable restrike delay times to eliminate lamp damaging hot startsSunrise sunset simulation settings to provide a gradual ramp up and down at both ends of your photoperiodBuilt in battery backup Voltage: 100–240V 50 60Hz 0 Updated locking signal and data cablesAll cables are shielded from electromagnetic interference to ensure uncompromising signal reliability and communication