SF100C Room Call Station, 1/4' jack, no audio

The TekTone SF100C is a premium, low-profile surface mount doorbell suitable for both commercial and residential use. It is constructed with a durable, impact-resistant polycarbonate housing and a stainless steel faceplate for a professional look. Installation is simple, needing just two screws for surface mounting onto a standard single-gang electrical box. This unit works with most 16-24V AC/DC doorbell systems and transformers. Its clear and pleasant chime tone is easily heard in common settings.