Specially designed for the residential environment, this is a family of compact controllers equipped with large, bright displays and a robust keypad for perfect operation even in extreme working conditions. The 200 Series controllers are also available in integrated panel format for the simultaneous control of two parameters (PH/ORP or PH/CLORO LIBRE). Without doubt, the integrated panels based on 200 Series controllers provide the best "plug&play" solution, both in terms of performance and cost.