Commercial audio entry systems invariably comprise a buzzer, ceramic microphone, speaker and magnetic-release door lock. Where multiple businesses occupy a single building of office complex, a multi-button panel could be used that may also incorporate a keypad for privileged access for staff members.
Commercial Audio Entry Systems
Business audio entry systems are generally used to restrict public access to premises and provide a simple level of security against unwelcome visitors. Unless coupled with an entry keypad or card-swipe mechanism lock override, such systems do not permit out-of-hours entry to the building.
Residential Audio Entry Systems
Audio entry systems for residential apartments, flats and other multi-occupancy dwellings are often identical to their business counterparts, performing the same duty: restricting access to non-residents by validating visitors through intercom dialogue. But they offer limited security and visitor identification.
Audio Entry Solutions
Audio entry systems have waned in popularity now that video technology has matured and the cost of implementing a compact audio-video solution has dropped. That is not to say the plain audio entry systems are redundant, it is just they are a less effective method of visitor identification.