iPower 1 Pack Variable Vent Fan Speed Adjuster HVAC Controller, Switch with 3 Settings for Inline Duct Exhaust, Black

One switch for 3 settings: ‘H’ ‘M’ ‘L’. Makes it easy to adjust the speed of your inline fans and duct fans., Specs: built-in grounded plug for safe operation; voltage/frequency: 120V/60HZ. Amperage: 15A., Wide variety of applications: if you do not have a grow tent, do not fret as this controller can be applied to many situations. These can include but are not limited to greenhouses, kitchens, bathrooms, and many other HVAC set ups., Safety and protection: when it came to your grow, your safety and protection is of the upmost importance. Featuring an easily removable fuse, this device is protected in the event of power surges and item malfunction., Note: this controller is not suitable for shaded Pole motor and brushless motor fan.