A bulb holder CCTV camera with two-way audio can combine video monitoring with voice communication. A built-in microphone and speaker may allow users to listen to activity near the camera and communicate through a connected mobile application. Depending on the model, it can also provide HD video, night vision, motion detection, wireless connectivity, and recording. This makes it useful for home entrances, reception areas, shops, offices, indoor corridors, and other locations where remote communication can complement video surveillance.