The Cm-SOL solar system controller is designed to control the heating of a hot water tank, an aqua-mulating tank (with or without built-in hot water tank) or a swimming pool using solar collectors and/or boilers and/or electric heaters.The controller can control the heating of up to 4 different tanks / swimming pools which can be heated by up to 2 separate solar collector fields and up to 2 types of conventional sources (boilers) or electric heaters. The pumps on the collector can be operated by PWM or analogue signal. In addition to temperature sensors, the controller can be connected to a flow meter and a pressure switch.With standard tank heating control via temperature differential, the controller has protection functions such as collector cooling, collector antifreeze, tank cooling, legionella protection (disinfection function) and protection of outlets (pumps and valves) from being seized when not in use for long periods. All functions are controlled via a colour touch screen, which simplifies operation.As an optional extra, the controller can be equipped with a Cm WiFi module, which allows the controller to be connected to a local WiFi network for remote control and monitoring of the system.