The SI-2 is an automatic switch that will take the input from two power amplifiers and connect them to one pair of speakers. When a signal is detected on the priority input, the device will automatically switch that input to the output. When the signal is lost or suspended, the SI-2 will switch back to the non-priority input. The SI-2 is ideal for residential intercom systems, commercial PA "talk-over" applications and other applications when you need the ability to interrupt an audio stream with important announcements. |
