The Aquamatics MK5 Control Unit is the cutting edge in pool sanitisation technology for smaller pools. It is designed to treat pools of up to a capacity of 10,000L of pool water for every hour of operation. The unit is very simple to operate and provides good feedback to help you maintain your system. The display reads out the current flowing through the pool water between the electrodes. If the current increases, the conductivity of the water has increased ie. more minerals have been added to the pool. If the current decreases then the pool water has been diluted with fresh water or the electrodes need replacing. The maximum current before ‘over-range is 300 mA (0.3 Amps).