Ebay offers Variable Fan Speed Controller Speedster Hydroponics Inline Fan Exhaust Air 1800W for $15.05 (reg. $35.90) plus free shipping.
It can adjust your fan to full speed in summer and to low or medium speed in winter to ventilate your grow room according different need. If used with fan and filter for ventilation, the suitable and adjustable fan speed is good for utilizing your carbon filter more efficiently. Safety is the most important for electrical equipment! Don't buy other cheap controllers with thin and short power cords which are not safe.
Category: Tools & Home Improvement
Posted on 16 May 2016, 02:27 PM