No, Wi-Fi security cameras cannot be used without Wi-Fi. Wi-Fi is required to connect the camera to a network in order to transmit images and videos. Alternatively, you can use a wired security camera system, which requires a physical connection to the router or an Ethernet cable to transmit images and videos. To do this, you will need to connect the security camera to the router or an Ethernet switch. You will also need to configure the router to recognize the camera and assign it an IP address. If you need help with this process, please contact your Internet Service Provider (ISP) or a professional IT technician.