The Alfasmart modulating system opens 25% per 1 ºF of temperature change for 5 positions. The Alfasmart modulation system working with a Galvanized Damper System and wired thermostat.

The Alfasmart modulating system opens 25% per 1 ºF of temperature change for 5 positions. The Alfasmart modulation system working with a Galvanized Damper System and wired thermostat.