ST-ACR1

Overview

The ST-ACR1 is an audio controlled relay that can be used to change the audio source base on audio input. For example the ST-ACR1 can be used to switch the audio source for a camera when a microphone is activated.

Connections

1) Line in Positive

2) Line in Negative

3) Line in Ground

4) Power Positive

5) Power Negative

6) Slave Terminal

7) Relay 1 Output

8) Relay 1 Input 1

9) Relay 1 Input 2

10) Relay 2 Output

11) Relay 2 Input 1

12) Relay 2 Input 2

Line In

An audio source should be connected to the Line In terminals. When this audio source becomes active, it will trigger the relay.

Power

A 24 Volt DC power supply must be connected to the power terminals.

Relay 1 & 2

Under normal circumstances, the audio from Input 1 will be sent through the output. When the relay is triggered, the audio from Input 2 will be sent through the output. Both relays trigger simultaneously when audio is detected on the Line In.

Example Install: Sim Room/Observation Room

In this example we will be using an audio relay to install a intercom system between an observation room and a simulation room. The observation room has a window in that allows the occupants to watch the simulation in progress.