PWM Fan Controller, Flush surface mount sending unit.

the electric fans often only run between 40-60% to keep your engine cool. Additional benefits include, reduced fan speeds which means reduced fan noise, which tends to compete with that sweet sound of your engine! This multi-fan controller has a built-in A/C Over-ride circuit and is designed to control as many 12 volt brushed electric fans as desired, up to 70 Amps combined. Even better, installation and calibration is a snap. It simply wires in-between your vehicles battery and electric fans.