CONVENIENT - Akicon fan light switch with humidity sensor can detect humidity in a room, automatically turn the fan ON when humidity exceeds a preset level, and turn it OFF after it drops to normal which helps eliminate moisture in time. MULTI-FUNCTION - The 3-function switch(one fan switch and two light switches) is compatible with most bathroom exhaust fans and lights. Ideal for use in bathrooms, laundry rooms, basements, garages, homes, and spas. FAN TIMER SWITCH - Equipped with a timer, you can turn it on during or after taking a shower, and the switch will turn off at specific times. Dual-tech exhaust fan control to keep your hands free. FLEXIBLE - The humidity sensor and timer feature 5 levels of each to choose from (90%, 80%, 70%, 60%, 50%) and (5, 15, 30, 45, 60 min) to suit specific ventilation needs of the room. Bypass the humidity sensor by manually turning the switch ON/OFF. EASY TO INSTALL - The switch fits in most wall boxes and can be installed in homes new or old. Comes with detailed installation instructions and a 3-year warranty. If you have any questions, our professional customer service will solve your questions 24/7. Akicon Humidity Sensor Switch for Bathroom Exhaust Fan with Light, LED Light, Night Light, Ventilation fan, Air Moisture Control, Timer Switch for Bathroom Fan, UL Listed, White