Add A Fan Speed Controller To Your Ventilation System For Full Control Of Your Grow Room
✅MULTI-FUNCTIONAL: Makes it easy to adjust the speed of your inline fans and duct fans
✅SAFE OPERATION: Built-in grounded plug for safe operation with all inline fans
✅SPECIFICATIONS: Voltage/Frequency:/220V/120V/60HZ Max. Amperage:15A
✅WHAT’S INCLUDED: Fan Speed Controller with Grounded Power Cord

The quality of the product and the dealer's response are excellent. The fan is very strong and the controller works very well.