VIVOSUN T4 4" AeroZesh Inline Fan 210 CFM — PWM EC Motor, E12 10-Speed & Cycle Modes

The VIVOSUN T4 4" AeroZesh inline fan is a 210 CFM, PWM-controlled ventilation unit with a ten-speed E12 controller and cycle-mode options for precise, quiet airflow management.

Designed for growers, basements, garages, and any indoor space that needs reliable air movement, the T4 pairs strong mixed-flow performance with smart control. Its EC motor and PWM speed regulation let you dial in airflow to balance temperature and humidity while running at a low 28 dB sound level. Included accessories such as the E12 speed controller and environmental probe make the system adaptable for manual or semi-automated setups.

How does the T4 help maintain stable temperatures and humidity?

The AeroZesh T4 provides continuous, adjustable airflow to reduce hot spots and lower excess moisture. With a 210 CFM rating and a mixed-flow impeller, it moves a steady volume of air appropriate for small to medium grow tents or utility rooms. The environmental probe measures changes and lets the fan respond to conditions when linked to compatible controllers.

• 210 CFM mixed-flow fan for consistent air exchange
• PWM-controlled EC motor for smooth, efficient speed changes
• Included probe enables reactive adjustments to environmental shifts
• Low 28 dB operation preserves quiet indoor environments

What control and programming options are available with the E12 controller?

The E12 speed controller gives ten selectable fan speeds and several cycle modes to automate on/off intervals. It remembers the last speed after power loss when you turn the unit off and back on, and its three-cycle mode can reduce runtime to save power. For more advanced automation, the E12 is upgradeable to VIVOSUN's E42A or GrowHub systems for app-based remote control.

• Ten PWM-driven speed settings for fine airflow tuning
• Three ON/OFF cycle modes for scheduled ventilation and power savings
• Memory recall restores previous speed after shutdown
• Upgradeable to E42A or GrowHub for multi-device and app integration

How easy is it to install and integrate into an existing setup?

The T4 is built with flexible installation in mind: a compact 4" housing, long power cord, and hanging capability allow placement inside tents, ducting runs, or on walls. Rubber mounts or clamps (not included) can reduce vibration transfer, and the fan connects directly to standard ducting. The E12 controller connects quickly for immediate control without complex wiring.

• Compact 4" form factor fits common duct sizes and grow tents
• Long power cable and simple hanging options for flexible placement
• Direct duct connection for inline ventilation systems
• Plug-and-play E12 controller—no advanced setup required

What performance and noise should I expect in daily use?

Expect strong airflow at higher speeds and whisper-quiet performance when dialed down; the T4 operates around 28 dB at lower settings. The EC motor delivers efficient operation across its range, which helps reduce energy draw compared with less sophisticated motors. Use cycle modes or the onboard probe to moderate runtime and preserve a steady environment without constant high-speed operation.

• Peak airflow of 210 CFM for active air exchange
• 28 dB sound rating at quieter speeds for undisturbed spaces
• Energy-efficient EC motor with PWM drive
• Cycle modes and environmental sensing for optimized runtime

Who this is for: The VIVOSUN T4 AeroZesh 4" inline fan is suited to hobby and small-scale growers who need dependable, adjustable ventilation, and to homeowners managing damp basements, garages, or utility rooms. If you want a compact, quiet fan with precise speed control, cycle-mode options, and upgrade paths to app-based controllers, the T4 delivers a versatile, professional-grade solution without complex setup.