How to Connect an Alarm device or Audio Device to a VIGI Camera

This article applies to VIGI network cameras equipped with an alarm/audio interface.

Commonly used external alarms and audio equipment include:

Type	Role	Common Devices
Audio In	Used for sound collection	microphone, pickup
Audio Out	Used for sound output	speakers, subwoofers, loudspeakers
Alarm In	Built-in sensors detect environmental abnormalities and provide abnormal signals	smoke detectors, infrared detectors
Alarm Out	After receiving the alarm signal, it alerts the user	buzzer, alarm light

This article will describe how to connect the above external alarm/audio devices to the VIGI camera.

When adding an external alarm/audio device, first connect the provided terminal to the corresponding alarm/audio interface.

1. Connect the Audio In device (using a microphone as an example)

3-wire system microphone for CCTV camera

Refer to the following diagram for the connection:

Microphone with RCA connector

Some microphones have dedicated interfaces for power and audio, which are pre-made connectors. Refer to the following diagram for the connection:

2. Connect the Audio Out device (using a speaker as an example)

Refer to the following diagram for the connection:

3. Connect the Alarm In device (using a smoke sensor as an example)

When an external alarm device detects an abnormal situation, it sends a signal to notify the camera, which then immediately takes corresponding measures to address it. There are various types of commonly used external detectors, such as sensors for sound, infrared, smoke, etc., which are connected to the Alarm In port of the device. Using a smoke sensor as an example, the connection diagram is as follows:

4. Connect the Alarm Out device (using a buzzer as an example)

VIGI devices can trigger alarms through external devices such as alarm lights, sirens, buzzers, etc. These alarm devices are connected to the camera’s Alarm Out port. Using a buzzer as an example, the connection diagram is as follows: