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iO HVAC Controls HD-Motor is a 2-Wire, 24VAC Replacement Motor For ARD round dampers, RZ3-1M 680474058020. Zonefirst models ZDS, ZDB, and RTS. For normally open, as used with Trol-a-Temp zone control systems._x000D_
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Features:_x000D_
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Actuator Mounting: Set-screw clamping to 5/16 inch diameter damper shaft and anti-rotation pin_x000D_
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Actuator Rotational Travel: 90 degrees (open to close position)_x000D_
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Actuator Electrical Connection: Two wire, single phase_x000D_
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2-Wire Spring Return Actuator 24V with durable gears, and easy to remove black plastic covers._x000D_
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Zonefirst replacement models ZDS, ZDB, and RTS._x000D_
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For use with dampers that are normally open._x000D_
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Applications:_x000D_
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HVAC Dampers_x000D_
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Material Dispensing_x000D_
