The range of access control is large, from the standalone keypad controlling a single door using a PIN number to multiples of doors networked locally or indeed remotely in premises physically anywhere across the globe. The methods of access being granted can vary, it can be via proximity fobs/cards, Bluetooth technology, QR code or biometrics (fingerprint, facial and iris recognition). These systems in turn, as well as access management, they can be used for time and attendance.
Intercom systems come in audio and audio video formats, with a wide range of external door station and internal handset choices. They vary from a 1 button door station to 1 handset to systems consisting of multiple door stations calling multiple apartments/offices, and can be wired or networkable depending on the system with facilities for the user to accept calls via a handset / monitor, an app on a smart device or an IP phone system . There are also GSM intercom options ideally suited to remote sites or where cabling is non existent (once the device can be powered locally).