The MWC Wired Damper Control eliminates overheating or overcooling in a space, and reduces the wasted energy heating and cooling unoccupied spaces. The MWC controls a modulating zone damper that adjusts the amount of airflow to the space anywhere from 100% to 0% for optimum comfort and energy savings. 
Low cost.
Very simple to use.
Wires to an R80DV damper using 3-conductor thermostat cable.
Mounts on a wall using the hardware provided.
 
Compatible Dampers
R80DV Unsealed Wired Damper or
R80DVS Sealed Wired Damper
Damper Sizes - 6" to 20" diameters.
Damper Shell - Spiral wrapped 24 ga galvanized steel.
Damper Blade - 20 ga galvanized steel.
Power - 24VAC or 24VDC. 3VA operating and 1VA holding. 2 wire connection to separate 24VAC 40VA transformer or to the R and C equipment terminals. One 40VA transformer can power up to 6 dampers.
Output Torque - 80 in-oz.
Operation Time - Fully opens or fully closes in approximately 3 seconds.
LED Indicators - Green LED indicates fully open. Red LED indicates fully close. No LED indicates a position between open and closed.
Multiple dampers can be used to define a zone.
Operating Temperature - -20 to 175 degrees F