The Neptronic fan coil room controller is designed for general HVAC applications but more specifically for 2 pipe and 4 pipe fan coil control. This modern controller can connect to: • One, two or three fan speeds • Damper actuator or actuated valve (modulating) • Electric duct heater This version is a fully configurable electronic controller. It complements the Neptronic family of products which includes electronic actuators and actuated valves, electric duct heaters and other controls.