- 2 buttons.- Control of one electric lock.- Protective switch.An affordable door intercomAt first sight. the 2N Helios IP Uni is a modest. yet very interesting door intercom in terms of possibilities. for simple installation. It offers the advantages of an IP environment and SIP telephone. while its simple installation allows the use of your existing LAN network. Control is intuitive. and high quality construction in a practical design ensures the device is sufficiently durable and resistant to external influences.The 2N Helios IP Uni intercom is an ideal solution for door communication in a regular outdoor and indoor environment. for example at the entrance to an office building or family home. The well designed construction allows simple installation on the surface or recessed in a wall or plasterboard. The use of IP technology and an SIP protocol gives the intercom a broad range of options for connection to telephone systems. Operation and configuration are simplified by a clear we