Sonoff CAM GlassView

Sonoff CAM GlassView

Sticks to the inside of a window pane to watch the outdoors, with RTSP, ONVIF and a browser console that need no app and no account.

Launch Year: 2026

Model: CAM-S3W

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Our review

Sonoff CAM GlassView Review: A 2K Window Camera That Runs Entirely Without the Cloud

The verdict

The CAM GlassView answers a narrow question very well: how to watch a driveway, front yard or parking space without drilling a hole, running outdoor cable or leaving hardware where the weather and thieves can reach it. It mounts on the inside of the glass with adhesive brackets and shoots through the pane, using an anti-glare optical design instead of the infrared illuminators that would bounce straight back off the window. The bigger story for this catalog is how local it is: 2K video, a microSD slot up to 128GB, RTSP and ONVIF, and an OpenEdge web console that configures the whole camera from a browser with no app and no cloud account. That combination is rare at this price and it is what makes the camera interesting to Home Assistant, Frigate and NVR setups. The trade-offs are real and they follow from the same design: no fill light means night video depends on whatever ambient light the street already provides, the detection is limited to motion and people, and shooting through glass will never match a camera mounted outside.

Best for
  • Renters and anyone who cannot drill
  • No-subscription seekers
  • Home Assistant, Frigate and NVR setups
  • Driveway and front yard monitoring
  • Budget buyers

Pros

  • Full local operation: OpenEdge browser console with no app and no cloud account
  • RTSP and ONVIF for Home Assistant, Frigate, NVR and NAS recording
  • 24/7 and event recording to microSD up to 128GB with no subscription
  • 2K video at 2304x1296 with anti-glare processing for shooting through glass
  • No-drill adhesive mounting with three brackets and four-way tilt adjustment
  • Dual-band 2.4GHz and 5GHz Wi-Fi
  • Two-year warranty, longer than most cameras in this class

Cons

  • No infrared or white-light illuminator, so night video needs ambient light
  • Detection covers motion and people only, with no vehicle, animal or package alerts
  • No microSD card in the box
  • No Apple Home, SmartThings or Matter support
  • 100 degree field of view is narrower than most indoor cameras
  • Indoor only, mains powered, with no battery or solar option

Who is the Sonoff CAM GlassView for?

This is a camera for a specific installation problem rather than a general-purpose security camera. It is rated for indoor use only and is designed to be stuck to the inside face of a window with adhesive brackets, so it delivers an outdoor view without any outdoor hardware. That makes it a fit for rented flats, apartments above ground level, offices with glass doors, campers and any spot where drilling through a wall or running weatherproof cable is not an option. Because it stays indoors it also keeps a stronger Wi-Fi signal and sits out of reach of tampering. It needs constant USB-C power, so it belongs near a socket rather than on a remote fence line, and there is no battery, no solar option and no cellular fallback.

What stands out on paper

The local control is the headline. An OpenEdge web console runs in a browser and handles setup and live viewing without the app or a cloud account, RTSP and ONVIF can be switched on for an NVR or a network video recorder on the same LAN, and an open JSON-RPC API is published over HTTP and WebSocket. Recording goes to a microSD card of up to 128GB in full-time, scheduled or events-only modes, with loop recording, so continuous history and event history both work with no monthly fee and keep working if the internet drops. The imaging side is built around the glass: a 3MP sensor producing 2K at 2304x1296 through an F1.0 aperture, with anti-glare processing to suppress reflections and full-colour night video. Dual-band Wi-Fi on 2.4GHz and 5GHz, AI human detection, adjustable detection zones, privacy zones, two-way talk and an audible alarm round it out, and it links to Alexa, Google Home and Home Assistant.

What to know before you buy

The night vision works differently from every other camera in this table, and it is a deliberate choice: there is no infrared and no white-light illuminator, because either one would reflect off the pane and blind the shot. Night video is full colour but it depends entirely on ambient light from streetlights, porch lights or the moon, and detail falls away in a genuinely dark scene. The AI is limited to moving objects and people, so there is no vehicle, animal, package or familiar-face detection and no audio event detection for glass, smoke alarms or a crying baby. No card is included, so the local storage that makes the camera subscription-free is an extra purchase. There is no Apple Home or SmartThings path and no Matter support, no motorised pan or tilt, and the field of view is 100 degrees, narrower than most indoor cameras here. Sonoff does not publish an HDR figure. Shooting through glass also means reflections can appear at the edges on very thick panes.

Is the Sonoff CAM GlassView worth it?

At the low end of the camera market, this is a lot of local capability for the money. Most cameras at this tier route everything through a vendor cloud and reserve continuous recording for a subscription, whereas this one records 24/7 to a card, streams over RTSP and ONVIF, and can be configured from a browser with no account at all. If the goal is an outdoor view from an indoor mount and the footage needs to stay on the network, it is a strong pick and an unusually easy one to install. If the priority is night-time detail in an unlit location, richer AI detection that separates cars and parcels from people, or an Apple Home or Matter setup, a conventional outdoor camera is the better buy and this one will disappoint on all three.

Frequently asked questions

Does the Sonoff CAM GlassView need a subscription?

No. Recording goes to a microSD card of up to 128GB and there is no cloud storage plan to buy. Full-time, scheduled and events-only recording all work from the card, and live viewing and configuration run locally through the OpenEdge web console.

Can it work without the app or an account?

Yes, and that is the point of the design. The OpenEdge local web console runs in a browser on the same network and handles setup, live video, camera settings and enabling RTSP and ONVIF, with no cloud connection required. An open JSON-RPC API over HTTP and WebSocket is published as well.

How does it see at night through a window?

It uses high-sensitivity full-colour night imaging rather than infrared. The camera deliberately ships without an infrared or white-light illuminator because either would reflect off the glass and ruin the image, so night footage relies on ambient outdoor light such as streetlights, porch lights or moonlight and loses detail in very dark scenes.

Does it work with Home Assistant?

Yes. RTSP and ONVIF can be enabled locally, which is what Home Assistant, Frigate, Blue Iris, Synology Surveillance Station and other ONVIF-compatible recorders use to pull the stream. Alexa and Google Home are supported as well, with live view and two-way audio available on their smart displays.

How is it mounted, and does it need drilling?

No drilling. The camera attaches to the inside of a window pane with 3M adhesive brackets and holds on magnetically so it can be lifted off and put back. Three brackets are supplied for different window types, and the angled one tilts in four directions for views from higher floors. A 3 metre extension cable and cable clips are included for routing the USB-C power indoors.

Is the Sonoff CAM GlassView weatherproof?

No, and it does not need to be. It carries no weather resistance rating and is specified for indoor use, because it is designed to sit on the warm side of the glass and film the outdoors through it, which keeps it out of the rain and away from tampering.

At a glance

Summary

Everything this camera supports, grouped by category.

Size & Materials
2.2 × 2.2 × 1.5 in (56 × 56 × 38 mm)2.2 oz (62 g)
Power
Wired
Connectivity
2.4 GHz WiFi5 GHz WiFi
Storage
MicroSD Card Slot
Integrations
Google HomeAlexaHome Assistant
Video
HD Video2K VideoColor Night Vision24/7 Live Streaming24/7 Video HistoryVideo Event HistoryOffline Video Event HistoryRTSP
Alerts
MotionPeople
Features
Talk & ListenCustomizable Motion ZonesPrivacy ZoneSiren

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Company
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Sonoff

4.3/ 5 avg ratingChina flagHeadquartered in China

Sonoff, a brand of ITEAD, makes affordable smart home devices including Wi-Fi and Zigbee switches, smart plugs, relays, sensors and the ZBBridge and Zigbee dongles. Its products work through the eWeLink app and integrate with Alexa and Google Home, and are popular with DIY users and Home Assistant fans for low-cost automation. Sonoff is well known for budget-friendly switches and Zigbee hardware.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials
Weather Resistance

NO

Dimensions

2.2 × 2.2 × 1.5 in (56 × 56 × 38 mm)

Weight

2.2 oz (62 g)

Available in colors

NO

Included accessories
MicroSD Card

NO

Power
Wired

YES

PoE

NO

Rechargeable Battery

NO

Battery Life

-

Solar Charging

NO

Connectivity
2.4 GHz WiFi

YES

5 GHz WiFi

YES

Ethernet

NO

4G

NO

Storage
Internal

NO

MicroSD Card Slot

YES

Cloud

NO

Integrations
Google Home

YES

Alexa

YES

Apple HomeKit

NO

Samsung SmartThings

NO

Home Assistant

YES

Matter

NO

Video
HD Video

YES

2K Video

YES

4K Video

NO

HDR

?

Black & White Night Vision

NO

Color Night Vision

YES

24/7 Live Streaming

YES

24/7 Video History

YES

Video Event History

YES

Offline Video Event History

YES

Powerless Video Event History

NO

Aspect Ratio

16:9

Field of View

100°

Pan & Tilt

-

RTSP

YES

Alerts
Motion

YES

People

YES

Animals

NO

Vehicles

NO

Familiar Faces

NO

Packages

NO

Glass breaking Sound

NO

Baby Crying Sound

NO

Smoke Alarm Sound

NO

Carbon Monoxide Alarm Sound

NO

Hub
Zigbee Coordinator

NO

Thread Border Router

NO

Matter Bridge

NO

Features
Light

NO

GPS

NO

Talk & Listen

YES

Customizable Motion Zones

YES

Privacy Zone

YES

Siren

YES

Gestures Recognition

NO

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