Videx 502 2 entrance switching relay

The device enables automatic switching between panels using the speech lines and other services to switch the door open service at the entrance. This relay is used for intercom systems which include two entrances, any additional entrance will requires an additional relay. The device enables automatic switching between panels using the speech lines and other services to switch the door open service at the entrance. It is not required on audio door entry systems that use the speaker unit (4838). It comes in a standard 8N module A type DIN box (140 mm). Features Visual status indicators Three common contact relays