Say goodbye to foggy mirrors and stuffy bathrooms with this TOPGREENER smart switch! It combines both PIR motion sensing and humidity detection in one sleek gray unit that replaces your standard light switch. The humidity sensor automatically turns on your bathroom fan when moisture levels get too high (like after a hot shower) and turns it off once the air clears up. No more forgetting to run the fan or leaving it on all day! The motion sensor can automatically turn lights on when someone enters and off when the room is empty, or you can set it to vacancy mode where you manually turn lights on but they auto-off. This dual technology means complete hands-free operation for both ventilation and lighting. It requires a neutral wire for installation and handles up to 500W for lights (works great with LEDs) and 3A for fan motors. Coverage is impressive - up to 600 square feet with a 180-degree field of view. You can adjust time delays from 15 seconds to 30 minutes and set three different humidity sensitivity levels to match your bathroom's conditions. Not just for bathrooms either - it's perfect for laundry rooms, spas, or any moisture-prone area. The energy savings are significant (up to 40% according to California Title 24 standards) since nothing runs longer than necessary. Installation is straightforward for anyone comfortable with basic electrical work, and the single button makes programming settings simple. Finally, a smart solution that actually understands what your bathroom needs without any complicated apps or Wi-Fi required!