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The Neptune Systems A3 Apex Controller System offers hobbyists the control they desire the monitoring they require and the scalability they need. The base unit includes 3 FMM Ports 6 Switch Digital Inputs 2 Aquabus Ports 1 pH/ORP* probe port 1 temperature probe port Wi-Fi and Ethernet connectivity and a built-in alarm. With up to 13 individual power connections available with the included Energy Bar 832 which is the only ETL/UL certified power supply for aquarium applications and 8x 120 VAC outlets 3x 1LINK outputs 2x DC24V outputs for accessories and 3x Aquabus Ports you can have full control over your tank. The A3 Apex base unit enters the market with a lab-grade double-junction probe for monitoring pH and temperature and the MOS Magnetic Optical Sensor to monitor water level and detect surface leaks. Plus the Apex’s Wi-Fi allows you to access the Age Group: adult.