How to Fix Baby Monitor Interference With Your WiFi Network

You brought home a new baby monitor and suddenly your WiFi slows to a crawl, drops connection entirely, or your router’s 2.4 GHz band becomes nearly unusable. It isn’t a coincidence. Most baby monitors — especially video monitors — broadcast on the same 2.4 GHz frequency as your router, and when two devices try to use the same channel in the same room, they collide. The result is interference that degrades both the monitor’s signal and your WiFi performance.

The good news: this is one of the most straightforward interference problems to solve, and you likely don’t need to buy anything new to fix it.

Why Baby Monitors Interfere with WiFi

The 2.4 GHz band is what engineers call an unlicensed spectrum — any consumer device is legally allowed to transmit there. Your router, baby monitor, microwave, Bluetooth speaker, and your neighbor’s router all share this same crowded airspace. Baby monitors are a particularly aggressive offender because they broadcast continuously, often with high-powered transmitters designed to punch through walls, and video monitors push significant bandwidth as a live stream.

The 2.4 GHz band only has three non-overlapping channels: 1, 6, and 11. A baby monitor parked on channel 6 — the most popular default — can swamp the exact channel your router is using, causing retransmissions, dropped packets, and slower speeds for every device on your network. Our guide to WiFi interference sources covers the full list of common culprits if you’re troubleshooting multiple devices at once.

How to Tell If Your Baby Monitor Is Causing the Problem

The easiest test is to unplug the baby monitor and run a speed test or play a video stream. If your WiFi performance improves noticeably the moment the monitor goes offline, you have your answer. You can also use a free WiFi analyzer app on your phone — look for a wide-band signal that appears or disappears in sync with the monitor’s power state. A video monitor will often show up as a broad, noisy hump across several channels in the 2.4 GHz spectrum. Our guide on how to use a WiFi analyzer explains how to read those results.

Fix 1: Change Your WiFi Channel

This is the fastest fix and it’s free. Log into your router’s admin panel (typically at 192.168.1.1 or 192.168.0.1) and change the 2.4 GHz channel. Aim for channels 1, 6, or 11 — the only three that don’t overlap each other on the 2.4 GHz band. If your baby monitor is operating on channel 6 by default, switching your router to channel 1 or 11 creates the maximum frequency separation between the two signals.

Our step-by-step guide on how to change your WiFi channel walks through this process on all major router brands. If your router supports automatic channel selection, disable it temporarily — auto mode often lands on channel 6 and will drift back there after a reboot.

Can You Change the Baby Monitor’s Channel Instead?

Some baby monitors allow you to manually select a channel or even a frequency band. Check your monitor’s manual or companion app. If it offers a choice between 2.4 GHz and 5 GHz, choose 5 GHz — that alone will resolve the interference since the monitor will no longer share spectrum with your 2.4 GHz WiFi band. If the monitor only supports 2.4 GHz, changing the router channel remains your primary lever.

Fix 2: Move Other Devices to the 5 GHz Band

Modern dual-band routers broadcast both 2.4 GHz and 5 GHz simultaneously. The 5 GHz band is faster, less congested, and completely separate from the frequencies most baby monitors use. Log into your router settings and create a distinct SSID for the 5 GHz band if you haven’t already — for example, “HomeNetwork_5G”. Then manually reconnect your laptops, phones, tablets, and streaming devices to that 5 GHz network.

This leaves the 2.4 GHz band much less crowded. Your baby monitor’s transmissions now have far less WiFi traffic to collide with, and your high-bandwidth devices operate on 5 GHz where the baby monitor cannot reach them. For a full explanation of how to use both bands strategically, see our guide on 2.4 GHz vs 5 GHz vs 6 GHz.

Fix 3: Increase Physical Separation

Radio interference follows an inverse-square law: doubling the distance between two transmitters reduces mutual interference by roughly 75%. Place the baby monitor and your router as far apart as practical — at least 10 feet is the standard recommendation, though more is always better. Avoid placing the monitor directly on top of or adjacent to a router, cable modem, or smart home hub. Even a few extra feet of separation can meaningfully reduce the collision rate between the two devices.

If the nursery and your router happen to be in adjacent rooms or on opposite sides of the same wall, try repositioning the router per our router placement guide — even a small relocation can make a measurable difference.

Fix 4: Switch to a DECT Baby Monitor

If you’ve tried the steps above and still have interference, the cleanest long-term solution is upgrading to a DECT baby monitor. DECT (Digital Enhanced Cordless Telecommunications) operates at 1.9 GHz in the United States — a frequency band that is completely separate from both the 2.4 GHz and 5 GHz WiFi bands. DECT monitors cannot cause WiFi interference by design, and WiFi cannot disrupt them either. The two technologies simply don’t interact.

Popular DECT monitors include models from Philips Avent (the DECT SCD series) and VTech. They tend to be audio-focused or lower-resolution video monitors compared to WiFi-based competitors, but they eliminate the interference problem entirely and don’t require a WiFi password or smartphone app to function.

A related option is a monitor using FHSS (Frequency Hopping Spread Spectrum) technology. FHSS rapidly jumps between channels many times per second, preventing sustained interference with any single WiFi channel. FHSS monitors are less disruptive to your WiFi than fixed-frequency 2.4 GHz models, though they don’t eliminate overlap as completely as a DECT device operating on a different band entirely.

The Bottom Line

Baby monitor interference is a real and common problem, but it’s almost always solvable without buying new equipment. Start by changing your router’s 2.4 GHz channel to 1 or 11, then migrate your other devices to the 5 GHz band to leave the 2.4 GHz airspace less crowded. If those steps don’t resolve it, increase physical separation between the monitor and router. Only if you’ve exhausted these options should you consider upgrading to a DECT monitor — though many parents find the permanently interference-free experience worth the switch regardless. Run a speed test before and after your changes to measure the improvement directly.