Our dc cross-flow fan parts have temperature control function and can also limit motor overload. Dc Cross-flow Fan motor position can be changed from right to left according to customer requirements; Dc Cross Flow fans are mostly light in weight, easy to use and low in maintenance cost. Some additional modifications may involve installing two impellers on one motor, with one motor on each side of the motor housing; We provide third line options for our Dc Cross Flow Blower, including signal rotation detection, signal frequency generator function and temperature control of the operating environment.