esigned to match popular lock and door hardware, Channel Vision’s 1/4" solid brass Front Door Intercoms provide residents with one of the largest selections available, including two sizes and eight different finishes. These units integrate a weather-resistant speaker/microphone, doorbell button and wall plate into one entry unit. Both models are available in four different versions to suit a variety of systems, along with an option for a hidden camera. By combining the Front Door Intercom and camera with a Channel Vision RF modulator (sold separately), a complete residential audio/video access control package can be created.