do you need special light bulbs for smart switches？

No, you do not need special light bulbs for smart switches. Smart switches are designed to work with normal light bulbs, providing connectivity to control the lights remotely through your phone or voice assistants like Alexa and Siri12. This convenience allows users to upgrade their lighting systems without the need to replace existing bulbs. However, it's always a good idea to check the packaging to ensure compatibility, as some smart switch manufacturers may have specific requirements or recommendations1. Additionally, if you want to take advantage of features like dimming or color changes, you will need compatible smart bulbs that support these functionalities23. For dimmer switches in particular, it's important to use dimmable light bulbs to prevent any issues4. While smart bulbs can offer more advanced features and may make traditional switches redundant due to their WiFi control5, smart switches offer a cost-effective way to integrate smart home technology with your current lighting setup.