SL2600-MO is suitable for the control of cold and hot water units. this controller can control 4 compressor units, with 4 electronic expansion valve control and 1 auxiliary electric heating, and supports heat recovery. the controller can be expanded to a maximum of 16 modules, and the modules are automatically recognized when they are online. The unit adjusts energy according to the water temperature, supports anti-freezing and intelligent defrosting, has a balance function between the modules, and has built-in phase sequence protection. The controller can be equipped with different hand operators (displays) according to user needs, and supports remote monitoring.