Can this be controlled from a switch to varying angles? Or is it just 'on' or 'off'?

No because the spring will revert it back to open position as soon as you shut off power to the motor. In order to do what you want you will need to get a motorized unit powered to to open n close unit without a spring return option.

Can i hardwire this to a timer to close and open at set times?

I would imagine that it would work only if the timer can pass the required voltage to turn the motors (24V).

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Suncourt ZoneMaster 8-Inch Normally Open Motorized Damper — Power Close/Spring Open 24V Vent Damper, Transformer Included (ZO208)

Suncourt ZoneMaster 8-Inch Normally Open Motorized Damper — Power Close/Spring Open 24V Vent Damper, Transformer Included (ZO208)

Product ID: 63655012

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Details

Brand
Suncourt
Color
Silver
Electric fan design
Blower
Power Source
['24 volts
Style
Modern
Product Dimensions
8"D x 8"W x

⚡24V power close / spring open operation

🔧0°-90° patented adjustable coupler

🌬️8-inch precision airflow control

Description

🌟 Take control of your airspace—because comfort is the new luxury.

EFFORTLESS POWER CONTROL - Normally open design ensures fail-safe airflow, closing only when powered—smart, reliable, and energy-conscious.
PRECISION AIRFLOW MASTERY - Fine-tune your indoor climate with exact 8-inch duct control for ultimate comfort and efficiency.
TRUSTED LEGACY WARRANTY - Backed by over 30 years of trusted performance and a 3-year warranty—because your comfort deserves reliability.
DURABILITY MEETS SIMPLICITY - Brushless motor and free-wheeling coupling extend lifespan while two-wire installation saves time and effort.
SEAMLESS SYSTEM INTEGRATION - Plug-and-play with existing zone controls or standalone use with included UL-listed transformer for hassle-free setup.

The Suncourt ZoneMaster 8-Inch Motorized Damper offers precision airflow control with a patented adjustable coupler, operating on a fail-safe normally open (power close) 24V system. Designed for easy integration with existing HVAC zoning or standalone use, it features a durable brushless motor, simple two-wire installation, and comes with a 3-year warranty, making it a reliable and efficient solution for modern indoor air management.

Specifications

Brand	Suncourt
Color	Silver
Electric fan design	Blower
Power Source	['24 volts AC']
Style	Modern
Product Dimensions	8"D x 8"W x 11"H
Special Feature	Adjustable, Automated Control
Recommended Uses For Product	Zone Control or Fresh Air Intake
Wattage	6 watts
Finish Type	Metallic
Switch Type	Transformer Switch
Item Weight	4 Pounds
Indoor/Outdoor Usage	Indoor
Model Name	ZO208
Control Method	Touch
Reusability	Reusable
Efficiency	High Efficiency
Is Cordless?	No
Number of Power Levels	1
Motor Type	Brushless
Manufacturer	Suncourt
Installation Type	Wired and Mounted
UPC	066028022165
Size	8"
Part Number	ZO208
Item Weight	4 pounds
Item model number	ZO208
Is Discontinued By Manufacturer	No
Finish	Metallic
Item Package Quantity	1
Special Features	Adjustable, Automated Control
Batteries Included?	No
Batteries Required?	No

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