The 620 series DC Axial Fan is suitable for high air performance with moderate pressure build-up. The flow of air through the fan blades is parallel to the rotation axis. They are extremely flat and space-saving integrated motor. Every single type of fan can be optimally integrated in the respective device concept. The highly economical brushless motor technology of these fans provides unique variety of intelligent innovations. The DC fans have electronically commutated drives with electronic protection against reverse polarity. The DC fans with sleeve and ball bearings are powered by class E insulated motors. Power (Watts) 2.40W RPM 6850 RPM Termination 2 Wire Leads Operating Temperature -4 ~ 158°F (-20 ~ 70°C) Electronic protection against reverse polarity Exhaust over struts direction of air flow Clockwise direction of rotation Connection via 22AWG single wires Very low noise motor Speed signal Alarm with speed limit External temperature sensor Internal temperature sensor PWM control input Analogue control input Moisture protection