Control  Modutrol IV Series 72 is used to control dampers and valves. The motor accepts a current or voltage signal from the electronic control unit to position the damper or valve at any point between opening and closing.

• The engine is designed to be normally open or normally closed in combination with damper valves.
• Input impedance : 4 to 20 mA : 100 ohms. 2 to 10 Vdc : 400K ohms.
• Shaft payload: 200 lb (91 kg) on motor, up to 300 lb (136 kg).
• Operating Temperature: -40 to 150°F (-40 to 66°C).
• Shaft size: 3/8 in. (9.5 mm) square.