This is a solid state controller.
Tjernlund Plug-In Fan Speed Control, Model# SCP

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- Variable Fan Speed Control: Allows you to smoothly dial in airflow by adjusting motor RPM—ideal for tailoring output on inline, basement, or duct booster fans.
- Simple Plug?and?Play Setup: Plug your fan into the SCP, then plug the SCP into a standard 120?VAC outlet. No complex wiring or professional installation required.
- High Compatibility: Rated for up to 300?W/3?A—works with Tjernlund M?Series and duct boosters like EF?6, EF?8, and EF?10.
- Works with Automation Accessories: Can be connected in series with the PS1503P duct airstat switch for humidity/pressure?based automation or plugged into a switched outlet for manual on/off control.
- Compact and Durable: Roughly 3?×?2?×?2 inches in size, housed in a sturdy plastic case with a control knob—small footprint, reliable performance.
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