(1)100W-3Kw (2)electronic wall fan speed switch (3)Certification:UL,CE,RoHS (4) ... more than 15 years experience 1 mainly used for fan speed control2 reheating furnace of tempering regulating and high-power ... 111-5KW Mainly used for the speed regulation of the fan, temperature and voltage control of the furnace, and ... , with stable and anti-jamming function at work. FAN SPEED CONTROL,POWER REGULATOR