6.3in EC Motor Ventilation Exhaust Fan Duct Fan Intelligent Controller 470 CFM AC100-240V Features: 1. High air volume and high wind pressure 2. Compared with the traditional AC fan, the intersecting surface of the airfoil is relatively stable, the angle difference is small, the blade thickness is thicker, and the operation is more stable. 3. The air volume under the same caliber is larger, which breaks through the limitation of the frequency of the traditional AC fan and greatly increases the fan running speed. 4. Intelligent controller provides manual mode and automatic mode 5. Widely used in conference rooms, high-end office buildings, public places, hotels, houses, hospitals, gyms, etc.   Specification: Condition: Item Type: EC Motor Ventilation Exhaust Fan Temperature Sensing Device: NTC Temperature Sensor Control Accuracy:±1℃ Self-Consumption Power: <1W Terminal Block: Can Connect Wires Less Than 2.5mm² Housing: PC+ABS Flame Retardant Material Protection Level: IP30 Operating Life: More Than 100,000 Relay Switches Pipe Diameter 6.3in/160mm Model Current Power Speed Air Volume Wind pressure V Amps W RPM CFM Pa 6in 100-240 0.7   MAX. 1.4 77 4300 470 542   Package List: 1 x Fan 1 x Governor 4 x Expansion Screw 6 x Screw 1 x Cable    Manual Mode: 1. Nine speeds. 2. Timed on/off function. It can be set to be turned on regularly within the specified time, and the timer is closed within the specified time. The function starts daily loops. 3. Delay off function. It can be set to 0-30mim delay in shutdown state. Automatic Mode: 1. Temperature value control. Automatically start and stop the fan according to the change of the temperature value 2. Humidity value control. Automatically start and stop the fan according to the change of humidity value 3. Child lock function: long press the up button 4S to enable the child lock function, the control button temporarily loses control Note: 1. Random shipment of new and old models.2. New-style and old-style are shipped randomly