4 Inch Inline Duct Fan Wired Smart Controller 141 CFM

Air Speed Selection: three-speed engine with NMB ball bearing, more than 50,000 hours of operation. Press the high / medium / low button to select the speed. Timer Set: Switch on the controller, short press the delay button once to delay 1min, and add 1 min every time you press the button, 30 minutes in total. Long press the delay button to cancel the timer function. Temperature monitoring: switch with temperature sensor Always monitor the room temperature. Shell: PC+ABS flame-retardant plastic Note: This duct fan is with 0.8m power cord, no plug, need wiring. Controller is with 2.5 meter wire. Parameter 4 Inch/100 mm Speed Dimension 302*204*195 mm High/Medium/Low Power Supply 220 ~ 240V / 50 Hz Current 0.16 amps H 0.12 amps M 0.11 amps L Power 35 W H 26 W M 23 W L Speed 2600 RPM H 2200 RPM M 1850 RPM L Air Flow 240 m3 / h H 198 m3 / h M 165 m3 / h L Air Pressure 192 Pa H 156 Pa M 131 Pa L Noise 35 dB H 31 dB M 26 dB