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How to enhance WiFi connection between cameras and NVR?

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2022-07-19 04:24

While using XMARTO WiFi security camera system, customers may experience video freeze, video lag or even "no video" issue.

This is typically caused by weak WiFi signal from cameras to the NVR. 

Based on 2.4Ghz WiFi, all cameras connect to the NVR's own WiFi, just like your phones/ tablets connect to your home WiFi router. 

In line of sight, XMARTO WiFi cameras can be mounted 1000ft (300m) away from the NVR. The camera system handles distance very well. 

However, like any WiFi devices, the cameras do not handle obstacles very well. Each wall reduces its WiFi strength noticeably. 

How Obstacles Affect Your Signal Strength
When your wireless signal is transmitted through various materials, such as walls and windows, the signal strength is affected. Though the NVR and wireless camera may be very close in proximity, you could still notice high signal interference if the signal passes through certain obstacles. For instance, if the signal passes through a concrete wall it will be severely weakened. Please reference the below chart to see which obstacles highly affect your signal and which do not. 


Based on the facts, below are some suggestions of how to optimize your cameras' WiFi connection. 

1. Select a WiFi channel with least interference for your NVR

As the only hub, the NVR's WiFi performance is crucial. To select a least-interfered WiFi channel for the NVR, ensures its performance not affected by other WiFi devices. 

This is how to,

A) In NVR's System setting - Network setting - WiFi setting. Click "Auto Select Channel", the NVR will automatically select a WiFi channel with least WiFi interference. 

B) For Japanese customers, you can choose region MKK and channel "Other" (channel 14) to avoid some WiFi interference. 

2. Place your NVR and cameras reasonably

The NVR is the only WiFi hub, all cameras are WiFi devices that need to connect to the hub. Centralize the position of the NVR so it reaches all cameras well.

Principle of placing NVR and cameras: avoid any possibly avoidable wall, in the line from NVR to cameras.  

Do not place near high voltage wires or other sources of electrical interference. Electrical interference will degrade the quality of the signal. 

Below are some more tips:






If there has to be obstacles between the NVR and camera, adjust the height of camera or NVR to avoid floor. Floors are normally heavier than walls.


Always find possible open between NVR and camera, mount camera and place NVR’s spot accordingly to allow signal to pass.


Metal walls (including metal garage gate) absorb wifi signal. Use extra extendable wifi antenna to bring camera's antenna inside the wall. This also works for heavy concrete wall.


Try to keep camera and NVR's antennas parallel to get better signal pick-up.

3. Bring the camera's antenna through a wall
If a camera needs to be mounted behind a wall, you may use a WiFi antenna with extension cable to pass the wall. 

Search "WiFi antenna with extension cable" on retail website like Amazon, you will find a lot of options. 

Mount the camera behind the wall, drill a hole, wire through the hole to bring the antenna inside the wall. 


4. Take advantage of XMARTO Dream Liner WiFi Relay technology
The xmartO Dream Liner technology uses cameras in middle as repeaters. That way, further cameras connect to closer cameras 1st, and then to the NVR as a group. 

The latest G3 XMARTO WiFi camera systems do it automatically. 

WiFi Relay


G3 Auto WiFi Relay

Here is an article about WiFi Relay, 


5. Use a WiFi camera repeater

Add an RPT20 physical WiFi camera repeater for that camera,


6. Hard Wire Cameras
If you cannot get a camera to work via WiFi anyway, you should consider to hard wire that camera, especially when it's PTZ camera.
Here is how to hard wire a camera,



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