Product Review

This xmartO high gain mini microphone is the best for CCTV applications. Power in and Power out design allows the microphone to share the same power source with the camera. No additional power adapter needed for the microphone.

Collect audio evidence as important as capturing video evidence, this microphone is a perfect addition to any video security camera system.

Add an external microphone to your xmartO camera, you can hear and record voice.

Specifications
* Power Consumption: 10mA
* Frequency Range: 300 ~ 5kHz
* Frequency Respond: 2.5 dB
* Output Impedance: 600Ω
* Output Level: 0 ~ 6V
* Dimension: 39.5mm x 31mm x 16 mm

How to get it work
1. Connect xmartO add-on microphone to the camera. Secure the microphone from rain or snow.
2. Go to NVR's main menu - System setting - CH setting - Encode setting, change Encode Mode to "AV Stream", save it.
3. Now you get audio from this camera.
Note: You need to change Encode Mode to "AV Stream" for all channels that you have added microphones.

How can you hear the voice?
1. Through the app, turn on audio on app, you can then hear the voice from your phone.
2. Plug a headphone to the NVR's audio output, you can hear the voice from the headphone.
3. Connect NVR to a monitor/TV via HDMI cable, you can hear voice on monitor/TV, as HDMI transmits audio.
4. Backup the videos and playback them on computer, you can hear the voice.

How to avoid/reduce background noise?
1. Adjust the volume: There is a volume control on the cable coming out of microphone, please use a small screwdriver to adjust the volume. Rotate it anti-clockwise will lower down the volume, which reduce the background noise accordingly.
2. Put the microphone in a proper place to avoid interference.