Baby Monitors

11 Ways to Stop Baby Monitor Interference

Sandra W Bullock

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Looking for ways to stop your baby monitor interference having gotten tired of static noises or perhaps constant signal drops? You’ve come to the right page.

Baby monitor interference with WiFi and other devices/objects can significantly impact the performance of your monitor, resulting in poor audio quality with static sounds and choppy, laggy footage for video. In this guide, I have shared all you need to know about baby monitor interference and practical ways proven to stop baby monitor interference.

There are two main types of baby monitors: analog and digital. Analog monitors operate on a single channel, which means they transmit signals over one frequency. Digital monitors, on the other hand, use multiple frequencies to send signals, making them less susceptible to interference.

Analog monitors experience a lot more interference than digital ones, which is why most parents opt for digital monitors nowadays and can hardly find analog monitors in the market. However, no matter what type of monitor you use, there are still various factors that can lead to interference.

Aside from baby monitor safety and a host of a few other features, we recommend you consider before purchasing a baby monitor signal interference. The static noise usually heard from the other end of a baby monitor is no fun, especially when it disrupts your child’s sleep or wakes them up. Whether you plan on getting renowned brands such as Motorola, VTech, Infant Optics, VAVA, and others, get to understand how each specific monitor fairs when it has to utilize the same frequency channel with other devices in your home.

This topic is critical as it is part of baby monitor safety and signal interference which should never be overlooked. We have included interference as part of our baby monitor safety checklist items and we cover it as part of our troubleshooting guide so you have a proper functioning monitor that truly enhances your baby’s safety.

In this guide, I have provided a detailed guide to baby monitor interference as one of the key factors to consider when getting a connected or non-connected monitor.

How to stop baby monitor interference:

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Remove devices causing interference:

Additionally, it’s important to properly position and orientate your baby monitor to minimize the chances of interference. This could mean keeping it away from other electronic devices or placing it at a certain distance from WiFi routers or access points.

Regularly update firmware:

Regularly check for firmware updates for your baby monitor and ensure that it is running on the latest version. This can help improve performance and minimize interference.

Avoid using multiple monitors:

Using multiple baby monitors in one household can also lead to interference, as they may operate on the same frequency band. If possible, try to limit the number of monitors being used or use ones that operate on different frequency bands.

Despite most monitors being digital, using 2 baby monitors utilizing the same frequency can cause interference especially if they are from the same brand.

This is why we highly recommend getting an expandable monitor that can support up to 4 cameras instead of buying an additional camera every time you’re blessed with an extra kid. We’ve got some great recommendations for dual-camera monitors with split-screen here!

Use wired connection:

If you are using a WiFi baby monitor, try using a wired connection instead. This can help reduce interference from other wireless devices and minimize the chances of interruptions in your video or audio feed. If your other devices have ethernet cables, connect them to the router using ethernet so they don’t interfere with your monitor.

Keep your baby monitor batteries charged:

Weak baby monitor batteries lead to weak signals and weak signals will struggle to compete in a crowded frequency, resulting in poor signal transmission. To ensure optimal performance, make sure your batteries are charged and the devices are fully functional.

If you’re using a baby monitor that doesn’t have rechargeable batteries, consider investing in some high-quality rechargeable ones to save money and reduce waste. This will also ensure that your monitor is always ready for use without any interference.

Keep distance from other devices:

It’s important to keep your baby monitor at a safe distance from other electronic devices such as cordless phones, microwaves, and routers. These devices emit signals that can interfere with your monitor’s frequency and affect its performance. Make sure to find a suitable spot for your monitor where it won’t be in close proximity to these potential interference sources.

Change channels:

Similar to how TV and radio stations have different channels, baby monitors also operate on different frequency channels. If you’re experiencing interference, try changing the channel on your monitor to see if it makes a difference. Most modern monitors come with multiple channel options, so make use of this feature to find the clearest signal for your monitor.

Invest in a digital or DECT monitor:

Analog baby monitors are more prone to interference compared to digital or DECT (Digital Enhanced Cordless Telecommunications) monitors. DECT monitors specifically use 1.9MHz frequency which is less crowded and known for its clear signal transmission. If you’re experiencing constant interference with an analog monitor, consider upgrading to a digital or DECT monitor for better performance.

Although FHSS technology has made some improvements in interference performance, it still tends to experience more interference compared to DECT monitors. It’s important to note, however, that DECT monitors are generally less secure than FHSS monitors. Read this article with detailed info on the differences between DECT and FHSS monitors.

Consider a monitor that connects to both 2.4GHz and 5.0GHz:

Many modern baby monitors come with the option to operate on both 2.4GHz and 5.0GHz frequencies. The 2.4GHz frequency is more commonly used and therefore more crowded, which can lead to interference. On the other hand, the 5.0GHz frequency is less crowded and offers better performance in terms of interference. If you have the option, consider purchasing a monitor that can operate on both frequencies and switch between them to find the clearest signal.

Keep other electronics away from your monitor:

Other electronic devices in your home, such as wireless routers, cordless phones or even microwaves, can also cause interference with your baby monitor. To minimize this interference, keep these devices at least 3 feet away from your monitor. This will help reduce the chances of overlapping frequencies and improve the overall performance of your monitor.

Keep distance from other devices:

Even if your baby monitor is operating on a different frequency than other electronic devices, keeping some distance between them can help reduce interference. Make sure to place your monitor at least 20 feet away from other devices to minimize the chances of interference.

Additional Guide and Tips to Stop Baby Monitor Interference with WiFi

What is baby monitor interference?

Baby monitor interference refers to the disruption or interruption of the transmission signal between the baby monitor and its parent unit. This can result in poor audio or video quality, frequent disconnections, and even complete loss of connection.

Both baby monitors and radios rely on frequency modulation as their underlying technology. However, there is a crucial distinction between the two. While the FCC designates specific frequencies for radio communication, baby monitors operate on what is known as the Industrial, Scientific, and Medical (ISM) frequencies, as they do not possess their own dedicated frequency range.

Interference greatly affects the camera of the baby monitor (the transmitter), diminishing its ability to transmit signals effectively to the receiver or parent unit. Understanding this can help you determine the optimal positioning for your baby cam or baby unit (for audio monitors), ensuring that no devices are nearby and there are no obstructions.

Devices that interfere with baby monitors:

They therefore share the same frequencies with other devices such as;

  • Cordless/wireless phones,
  • wireless routers
  • wireless speakers,
  • microwave ovens, and
  • Wireless surveillance video cameras – CCTV
  • Bluetooth devices.
  • Car alarms(select).
  • Wireless microphones.
  • ZigBee (802.15.4).
  • Another monitor using the same frequency.
  • Pacemaker

A few monitor brands now come with a switch that allows you to switch between channels when one is experiencing interference or jammed. Some brands that take privacy seriously have privacy options for the parent unit and baby nursery unit ensuring that the device operates on a secure and encrypted connection.

Understanding radioelectric spectrum saturation:

According to a study, there were 8.6 billion active mobile connections in 2017, with an average traffic per device of 2.3 GB per month. The study estimated that monthly global mobile data traffic was to reach 77 exabytes by 2022, with an annual traffic of around 1 zettabyte.

This clearly illustrates how the increasing number of devices utilizing the 2.4 GHz network can lead to a more widespread issue of interference. While the quantity of devices itself may not pose a problem, it can become problematic if all devices in your household, including your baby monitor, operate within the same frequency range.

A significant concern arising from this is the potential for certain devices to transmit data at faster rates, resulting in radioelectric spectrum saturation that hinders the transmission of data from other technologies by generating noise and interference.

Interference can significantly impact your WiFi connection, leading to weakened or unstable signals, resulting in slower internet speeds or even disconnections. This issue is particularly common in densely populated areas, such as apartment buildings or urban environments, where multiple devices compete for limited wireless bandwidth.

6 Issues that baby monitor interference causes:

  1. Poor audio quality with static, crackling or buzzing sounds.
  2. It Increases signal latency which can have a detrimental impact on audio and visual signal transmission
  3. It causes video image distortion on monitors that come with video capabilities.
  4. Due to the introduction of noise, there will be an increase in the data packet retry rate.
  5. Reduced network speed if using WiFi after baby monitor interference
  6. Signal loss causing complete disconnection between the parent and baby unit.

Types of baby monitor interference to Prevent:

There are 5 major types of baby monitor interference:

Co-channel interference:

This occurs when two or more devices share the same frequency range, resulting in overlapping signals that can cause distortion or complete signal loss. For example, if your neighbor’s WiFi router and your baby monitor both operate in the 2.4 GHz frequency range, it can lead to co-channel interference.

Adjacent channel interference:

This type of interference occurs when there are small gaps or overlaps between frequency channels, resulting in signals from one channel bleeding into another. This can happen with devices that use Bluetooth or ZigBee technology, as they operate within close frequency ranges to WiFi.

If a monitor such as Infant Optics with 4 channels is using channel 3 in 2.4GHz frequency band and another device is using channel 2 in the same frequency, it can cause adjacent channel interference.

Crosstalk interference:

This type of interference occurs when signals from one device interfere with the signals of another device, causing a mix or cross-over effect. In the case of baby monitors, this can happen if there is poor shielding or signal isolation between different channels on the monitor.

This is much more common with analog monitors.

Power source interference:

Another common cause of interference with baby monitors is power sources, particularly those that emit strong electromagnetic fields. This can include electrical wires and outlets, as well as large appliances like refrigerators or microwaves. These strong magnetic fields can disrupt the

Overlapping interference

This type of interference is caused by devices that transmit data at high power levels, resulting in overlapping signals that can interfere with other technologies. This can happen with powerful routers or access points, as they can cover larger areas but also produce stronger and wider wireless signals. In simpler terms, baby monitors can be impacted by other devices that use the same frequency range but have a higher power output.

Physical obstruction interference:

Physical obstructions can also cause interference with baby monitors. Thick walls or large metal objects like refrigerators can block or reflect wireless signals, causing them to weaken or change direction. This can result in weaker signals and an increase in interference.

Non-WiFi Interference:

Non-WiFi devices such as microwaves, cordless phones, and wireless video cameras can also cause interference with your baby monitor. These devices operate on different frequencies but can still interfere with the signal of your baby monitor if they are located nearby.

It’s important to note that while interference is more likely to occur in crowded areas with multiple devices, it can also happen in a single household if multiple wireless devices are being used at the same time. This is because each device has a limited number of channels it can operate on, and if those channels are already being used by other devices, interference can occur.

Why baby monitors get interference:

In 1985, the FCC made a landmark decision to grant free usage of specific frequency bands, namely the 2.4-2.4835 GHz and 5.725-5.850 GHz ranges (Here is the FCC ruling – PDF). This ruling opened up new possibilities and opportunities for innovation and technological advancements.

Demand for unlicensed spectrum led to many devices using 2.4Ghz frequency

The 2.4GHz (2400-2500 MHz) range is an unlicensed frequency band, which means you don’t need any special permits or strict requirements from telecommunication regulatory bodies to transmit or receive data on this frequency range. That’s why more and more devices and technologies are using this band for wireless data transmission. Unlike DECT, which works through the 1.9GHz band, this voice-dedicated wireless frequency virtually eliminates interference from other wireless devices.

In the designated Wi-Fi radioelectric spectrum for Wi-Fi communications (802.11b/g/n), numerous devices coexist in the medium, but not always in a harmonious and organized manner.

Is there a baby monitor with no interference?

While it can be challenging to find a baby monitor with no interference at all, some options offer less interference or ways to minimize it. For example, digital enhanced cordless telecommunications (DECT) baby monitors use a dedicated 1.9 GHz frequency band and advanced technology to reduce interference from other devices.

DECT monitors such as Philips Avent or Panasonic Long Range Baby Monitor are among the baby monitors that don’t interfere with wifi at all as they use a different 1.9GHz frequency band that’s different from the 2.4GHz frequency band used by WiFi routers.

Since physical obstructions are a factor in monitor interference, consider these monitors for big walls with strong signal connectivity.

How do I know my baby monitor is getting interference?

Interference on a baby monitor can manifest in various ways. Some common signs of interference include static or buzzing noises, distorted sounds, and sudden drops in signal strength.

Static sounds are like a hissing sound, and this can indicate interference from other electronic devices using the same frequency band as your baby monitor. Distorted sounds could be due to signal interferences caused by walls or other physical obstructions between the transmitter and receiver.

Sudden drops in signal strength can happen when there is a lot of network traffic on the same channel or if your baby monitor’s signal is overlapping with another device’s signal.

If you have a digital video baby monitor, the images or video quality may also be impacted. For instance, the video quality might appear fuzzy or out of focus, potentially resulting from interference from other electronic devices or a weak signal. It’s important to ensure a clear and crisp video feed for effective monitoring of your little one.

It is important to note that not all interference is caused by external devices; sometimes it could be due to obstructions or distance between the transmitter and receiver.

Another way to determine if your baby monitor is experiencing interference is by checking the signal strength indicator on the monitor. If it fluctuates or drops to low levels, it could be a sign of interference.

Preventing Baby Monitor Interference:

#1: Identify the source of interference:

When you notice interference on your baby monitor, the first step is to identify the source of the interference. This can be done by turning off other electronic devices in the room and checking if the interference continues. If it does, it could be caused by a nearby device or physical obstruction.

#2. Change channels:

If turning off other devices doesn’t resolve the issue, try changing channels on your baby monitor. Most modern baby monitors come with multiple channels to choose from, and switching to a different channel can help reduce interference.

Baby monitors, like other devices operating on the 2.4GHz band, transmit and receive data on specific frequencies, known as channels. Since Wi-Fi data is digital, multiple devices can effectively communicate on the same channel. Usually, the default channels used are either channel 6 or channel 11.

Certain monitors can automatically detect less congested channels instead of relying on the default setting. However, it can be challenging to determine which devices are using specific channels within your household or even among your neighbors. In such cases, you may need to experiment with different channels if the auto channel function fails to provide an interference-free experience.

Below is an image showing 3 devices that are using a single channel(channel 6) instead of each going for free channels (from channel 1 to 5 and from channel 7 to 11).

image showing 3 devices using the same channel instead of spreading to reduce interference

If your monitor is behaving like this by using a channel that’s already crowded, you need to manually change the channel.

Using the same channel as your neighbor for your baby monitor can lead to signal interference, resulting in a subpar experience.

To change the channel on your baby monitor, follow these steps:

  1. Refer to the user manual: Every baby monitor comes with a user manual that outlines how to navigate through its settings. The manual should have specific instructions for changing channels; if not, it’s best to contact customer support for assistance.
  2. Use the monitor’s menu: If your monitor has an on-screen display, you can use the menu to navigate to the channel section and change it accordingly.
  3. Use the buttons on the device: Some monitors have physical buttons that allow you to access settings directly. Look for a button labeled “Channel” or “CH” and press it to cycle through available channels until you find one that is less congested.

Remember to test out different channels and choose one that provides the best audio and video quality without interference.

#3: Adjust the position of your monitor:

Sometimes, simply moving the transmitter or receiver of the baby monitor can help improve signal strength and reduce interference. Experiment with different positions until you find a spot that gives you clear audio and video.

#4: Upgrade to a digital monitor:

Analog baby monitors are more prone to interference, but if you’re still using one, consider upgrading to a digital model. Digital signals are less susceptible to interference, providing clearer audio and video.

#5: Charge batteries:

If your baby monitor is battery-operated, make sure the batteries are fully charged. Weak or dying batteries can cause interference and disrupt the signal.

#6: Reduce obstructions:

Physical obstructions such as walls or large objects can weaken the signal of your baby monitor and cause interference. Try to keep the transmitter and receiver in a clear line of sight for better signal strength.

#7: Keep distance from other wireless devices:

Wireless devices such as WiFi routers, cordless phones, and Bluetooth speakers can interfere with your baby monitor’s signal. Keep a distance between these devices and your monitor to reduce interference.

#8: Consider using a sound machine:

If you have tried all the above methods and are still experiencing interference, try using a white noise or sound machine in your nursery. The constant background noise can help drown out any interference from other devices.

#9: Check for firmware updates:

Sometimes, manufacturers release firmware updates for baby monitors that can improve signal strength and reduce interference. Check with the manufacturer of your monitor to see if there are any updates available.

#10. Restart devices but switch your monitor on first:

As mentioned above, when radioelectric spectrum saturation occurs, certain devices that are more ‘aggressive’ will take a bigger chunk of the bandwidth. By switching on your baby monitor first, it has a higher chance of securing a stable connection before other devices start competing for bandwidth. If you are still experiencing interference, try restarting both your monitor and receiver.

Check out these 11 ways to boost baby monitor signal (the 5th suggestion to use a Wi-Fi extender is only applicable to WiFi monitors).

Motorola baby monitors interference noise:

If you’re experiencing interference with your Motorola baby monitor, there are several troubleshooting steps you can take. One common reason for the noise is that the Baby and Parent Units may be positioned too closely together. To resolve this, simply move them further apart, ensuring there is a distance of at least 1 to 2 meters between the two units to prevent audio feedback. If the baby unit is too far away, it may be out of range, so it’s recommended to bring the Baby Unit closer to the Parent Unit.

If these solutions do not resolve the issue, please ensure that the Baby and Parent Units are not near other electrical devices such as televisions, computers, or cordless/mobile telephones.

According to Motorola’s support page, it is recommended to keep the baby monitor at least 1.5m (5ft) away from these devices. However, I would suggest increasing the distance to up to 20 ft or even consider turning them off if they are causing any disruptions.

If you are experiencing a weak signal, try repositioning the Parent and/or Baby Unit in different locations within the rooms.

Babysense Monitor interference:

To troubleshoot interference with the Babysense Monitor, ensure that electrical Wi-Fi-connected devices are kept at least 5 feet away from the monitor. In most cases, simply moving your mobile device or other devices that use 2.4Ghz WiFi, such as a microwave or WiFi router, about 8-10 ft away from the monitor should resolve the issue.

I believe there is an error on Babysense’s support page regarding the recommended distance between the monitor and other devices. It incorrectly states that you should move other devices 8 to 10 feet away. See it here.

If the issue persists, try deleting the paired cameras. Power the monitor off and on, and then reset the device. Once done, re-pair the desired cameras. Another possible cause of Babysense Monitor interference could be power adapter problems. Please switch between the power adapters of the camera and the parent unit and see if that sorts it.

Hellobaby monitor interference:

One of the most common complaints about Hellobaby Monitors is the interference it experience from nearby devices. Some users have even mentioned how the camera can be affected by metal roofs, and even your phone can cause interference. Even without our baby’s sound machine on, the monitor consistently emits static noise when your Hellobaby is experiencing interference.

To address this issue, it is recommended to keep the camera at least 6 feet away from other electronic devices to minimize interference with the Hellobaby Monitor. In addition, make sure that both the camera and parent unit are plugged into a different outlet than any other electrical device. This will help reduce the chances of interference.

If you are still experiencing interference, try changing the channel on your Hellobaby Monitor. This can be done by going into the menu settings and selecting a different channel for the camera. Keep in mind that there are multiple channels available, so it may take some trial and error to find the one with the least amount

Stopping Infant Optics Interference:

The Infant Optics DXR 8 monitor may interfere with your WiFi network, resulting in slow download speeds, signal loss, or poor display quality. The manual(snapshot below) for Infant Optics DXR 8 highlights four primary causes of interference: distance/range limitations, depleted battery, physical obstructions, and the presence of other devices.

How to fix Infant Optics DXR 8 interference

To resolve this issue, place the Monitor and Camera Unit further away from your router. Ensure that the Camera and Monitor Unit are at least 5ft (1.5m) away from these devices that use 2.4GHz frequency such as WiFi router, or turn them off if they are causing interference. It is also recommended to keep them away from thick walls or metal structures.

Stop VTech baby monitor interference:

To address VTech monitor interference, ensure that your baby monitor is positioned at least 3 feet (1 meter) away from devices such as wireless routers, microwaves, cell phones, and computers.

helpful image showing how to position vtech to avoid interference

Additionally, adjust the angle of the baby unit camera to focus on your baby.

If the camera is positioned to pass through obstructions and not focussing directly on the baby, it can get interference.

How to position vtech camera to avoid wifi interference

For optimal sound quality, place the parent unit more than 3 feet (1 meter) away from the baby units to avoid any potential screeching noise. Below is another helpful image from VTech support page.

recommended distance to position vtech monitor from other devices to avoid interference

FAQs on Stopping Baby Monitor Static/Interference

Why is my baby monitor making a static noise?

The most likely reason for static noise on a baby monitor is interference from other electronic devices. This can be caused by placing the monitor too close to devices such as wireless routers, microwaves, cell phones, and computers. To avoid this issue, make sure to keep your baby monitor at least 3 feet (1 meter) away from these devices.

Do baby monitors interfere with each other?

Yes, baby monitors can interfere with each other if they are operating on the same frequency or channel. This can cause interference and result in poor quality audio or video. To prevent this, some modern baby monitors have multiple frequency options to choose from, allowing you to switch frequencies if interference is detected.

Can baby monitors interfere with wifi?

Yes, FHSS and Wi-Fi baby monitors can interfere with WiFi signals as they are operating on the same frequency. This is because both devices use radio waves in the same frequency to transmit data and can potentially cause interference with each other’s signal. To avoid this issue, make sure to keep your baby monitor at least 3 feet (1 meter) away from your wireless router or choose a different frequency for your baby monitor if it supports 5GHz frequency.

What causes interference with baby monitors?

Interference with baby monitors can be caused by various electronic devices and factors such as wireless routers, cell phones, microwaves, and other baby monitors operating on the same frequency. Additionally, thick walls and distance from the monitor can also cause interference as they weaken the signal strength. To minimize interference, it is recommended to place the baby monitor in a central location and away from other electronic devices.

Can cell phone interfere with baby monitor ?

Yes, cell phones can interfere with baby monitors as they also use radio waves to transmit data. This interference can cause static or distorted audio and video on the baby monitor. To avoid this, it is best to keep your cell phone at least 3 feet away from the baby monitor while in use. You can also consider using a digital or DECT (Digital Enhanced Cordless Telecommunications) baby monitor, which operates on a different frequency and is less likely to experience interference from cell phones.

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