*Features*: *Ventilation Booster Fan*:This fan system enhances airflow through your wall and floor HVAC ducts to improve home comfort. It eliminates uneven room temperatures with high-precision temperature sensor,automatically turning on/off to maintain your desired climate setting. *Smart Temperature & Dual Diffuser Slots*:Featuring automatic temperature detection and dual built-in aroma diffuser slots,this smart register fan lets you add essential oils or perfume(not included) to the included cotton pads. Enjoy a fresh,fragrant atmosphere as air circulates throughout your space. *Smart Remote & LCD Display*:Equipped with 3 modes including:Winter Mode(operates from 70°F to 99°F),Summer Mode(operates from 55°F to 80°F),and Fan Mode(10-level speeds,),and a 2H/4H timer with the full-function remote. The LCD clearly displays temperature and speed,with auto-dimming after 1 minute to prevent nighttime glare. *High-Efficiency Dual Motor Performance*:Dual motors with PWM technology and 3600RPM speed deliver a powerful 150 CFM airflow—faster and stronger than standard vent fans. It quickly balances temperatures across floor,ceiling,and wall vents,offering quiet yet robust performance for hard-to-reach rooms. *Complete 4x10 Vent Fan Upgrade Kit*:Includes:1 booster fan,1 adapter,1 remote control,2 screws,2 expansion anchors,3 cotton pads,and a user manual. Everything you need for an easy upgrade to your 4"x10" air vent. Friendly Reminder: * The floor vent fan booster is designed to increase airflow from the vent,it neither heats nor cools the air. * The summer mode of this exhaust fan needs to be set at 55-80°F,and the winter mode temperature needs to be set at 70-99°F before the machine starts to run. If the machine does not work after receiving it,please check whether the temperature is set correctly! *Specifications*: Product Type: Register Booster Fan Color: White Material: ABS Power: 9W Speed: 3600RPM Air Flow: 150CFM Powered By: 100-240V 50/60HZ Plug(22AWG Pure Copper Cable) Power Adapter Cable Length: 3.5m/11.48ft Motor: Brushless Motor, With PWM Technology Fit Vents Size: 4x10in Mode: Fan Mode, Winter Mode, Summer Mode Fan Mode: 1-10 Levels Wind Speed Summer Mode: The fan operates from 55°F to 80°F. The fan starts operating when the detected temperature is below the set temperature and stops operating when it exceeds the set temperature. Winter Mode: The fan starts operating from 70°F to 99°F. The fan starts operating when the detected temperature is above the set temperature and stops operating when it falls below the set temperature. Low-Power Mode(Screen Dim): After 1 minute of inactivity, the display goes dark and enters low-power mode. Press any key to activate the screen again. Control Method: Button Control, Remote Control Timer: 2H/4H Remote Control Powered By: 2Pcs AAA Batteries(Not included) Remote Control Distance: 10m/32.8ft Without Obstacle Display: 3.5x2.6cm/1.38x1.02in Fan: 2Pcs, 7-Blade, 9cm/ Diameter Item Size: 29.5x14x5.5cm/11.6x5.5x2.17in Item Weight: 440g/0.97lbs Package Size: 35x15x7cm/13.78x5.9x2.76in Package Weight: 725g/1.6lbs *Package Lists*: 1 x Register Booster Fan 1 x Power Adapter 1 x Remote Control 2 x Self-Tapping Screws 1 x Expansion Anchors 3 x Cotton Pads 1 x User Manual