MAREVA pH regulator for swimming pool - 637009 intervenes on the pH value. This treatment is used when the pH level of your pool is too low and your water is therefore acidic. If the pH level of your pool is too low, this will affect the effectiveness of the chlorine in your pool. If these values are not between 7.2 and 7.6, even treatments with disinfectants (chlorine, bromine and active oxygen) will not guarantee the desired effectiveness. The physical consequences for swimmers are then very unpleasant: red eyes and dry skin. A good pH is therefore an essential step for a good maintenance, to be checked every week. Marva specializes in the manufacture and design of treatment products and equipment for in-ground pools, above-ground and self-supporting pools or public pools. Today, it is one of the European leaders in pool treatment products and the second largest producer of P.H.M.B (PolyHexaMethyleneBiguanide) which is a chlorine-free disinfectant. Advantages : Acid or basic product dosage to maintain the pH at the right level Flexible and precise Compact size with high performance thanks to its digital display Housing and pH sensor guaranteed for 2 years Dual power supply to control the filter pump to avoid injecting product if the water is not circulating The case is designed to receive an optional product level sensor that alarms the device to warn you of a lack of product Characteristics : Power supply: Standard 230 VAC - 15 Watts (max) Level inputs: Standard Reduced range 5-9 pH (typical pool) Statistics: Average pH measurement Packaging: One MAREVA Pool pH Controller - 637009Delivered in its original packaging