This wall fan is the lite version of Industrial wall fans, also the lowest cost. The grill wires are thin and less than premium one, still good for normal prolonged use in a Industrial applications. It has only manual switch control with oscillation function. Specifications Voltage 220v/ 50Hz Power 100 w Blades diameter 650 mm (26) Total diameter 700 mm Speeds 3 Control Local 3 speed select switch