3K (3072 x 3072) | 180° x 180° view | Wired, 16-24V AC | Radar + dual PIR | 4GB built in | Chime 2 included
Overview
The eufy Video Doorbell S4 is a wired video doorbell, and eufy UK sells it with a eufy Chime 2. eufy’s UK page lists 3K, 9 MP video and a 180° x 180° view from one camera, and eufy’s Irish page, which uses the same product ID, gives the resolution as 3072 x 3072 at 15 to 24 frames per second. It has colour night vision with dual spotlights, OmniTrack AI tracking that keeps a person centred and follows them, and a VR Mode in the app that lets you look around by moving your phone or a headset. Detection uses radar plus dual PIR, and eufy’s Irish spec table lists people, motion, package and face detection.
It is wired only. eufy’s Irish page says it connects exclusively to existing doorbell wiring, doesn’t support battery or solar power, and has a small built-in battery for backup during power cuts. eufy’s S4 user guide asks for a 16-24V AC, 10-40 VA transformer, and has you bypass your existing chime with a supplied jumper, so the old chime no longer sounds; the Chime 2 is a plug-in chime instead. Recordings are saved to 4GB of built-in eMMC storage with no monthly fee, and eufy’s Irish page adds an SD card slot for cards up to 1TB (card not included). It works on its own or with a eufy HomeBase (not included), over 2.4GHz or 5GHz Wi-Fi; eufy’s Irish spec table lists it as Wi-Fi 6 (802.11ax). eufy UK lists Google Assistant, Alexa and Apple HomeKit; eufy’s Irish and US pages say HomeKit needs a HomeBase S380 (HomeBase 3).
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Key Features
Pros & Cons
Pros
Cons
Power, Storage and Chimes
eufy’s S4 user guide asks for a 16-24V AC, 10-40 VA transformer. It says mains power (110V/220V) is not supported and will damage the doorbell, and that an underpowered transformer may overheat, burn out or make the doorbell malfunction, so check your transformer’s specifications first. eufy UK’s S4 buying guide says that if your home doesn’t already have suitable wiring, installation may require additional electrical work. eufy’s Irish page says a 2,600mAh built-in battery takes over during power outages.
Clips are saved to the doorbell’s 4GB of eMMC storage, or to an SD card of up to 1TB (not included). eufy’s Irish page says the S4 also works with a eufy HomeBase S380, HomeBase mini, Pro S1, MindBase, NVR or Smart Display E10. It also says push notifications with thumbnail previews need the thumbnail images to be stored in the cloud temporarily.
The plug-in eufy Chime 2 comes in the doorbell and chime kit that eufy UK sells. eufy’s S4 user guide has you fit a supplied jumper across the FRONT and TRANS terminals of your existing chime, and says the existing chime will not sound once the jumper is in place. eufy’s Irish page also lists an Alexa Echo device, a eufy MiniBase Chime or a HomeBase as other ways to hear the doorbell; the MiniBase Chime and HomeBase are not included.
What’s in the Box
eufy’s S4 user guide lists the video doorbell, a mounting bracket, a screw hole positioning card, a 15° wedge, a screw pack, extension cables, chime bypass jumpers, a doorbell detaching pin and a lens cloth. The chime and its power plug come in the doorbell and chime kit.
Privacy and Security
Want to know about eufy’s security and privacy record before you buy? See our Is eufy safe? explainer.
Setup & Installation
eufy’s S4 user guide starts in the app: download the latest Anker eufy app, sign in, add the doorbell and scan the QR code on its back. If the doorbell won’t turn on, the guide says to wire it up first so it can charge, then add it again. The SYNC button on the back turns the doorbell on with a press; hold it for 2 seconds until you hear a beep to set it up.
Before wiring, ring your existing doorbell to check the wires work, then shut off the power at the circuit breaker. Bypass your existing chime with the supplied jumper across its FRONT and TRANS terminals. Check the live view in the app with the doorbell held at the door, then mount it at about 1.4 m, leaving 6 cm of space for the detaching pin; the 15° wedge angles the view. Connect the two wires to the terminals on the back without letting them touch, press the doorbell onto the bracket until it clicks, and switch the breaker back on. eufy says that if you’re not comfortable installing it yourself, have a qualified electrician do it.
To add the Chime 2, fit its power plug, plug it into a wall socket, and connect it in the app by pressing its SYNC button or scanning its QR code.
If you want to use a HomeBase S380 (HomeBase 3), eufy’s setup guide says to start in the app under Add Device > HomeBase 3, then plug the HomeBase into a LAN port on your router with its original adapter, wait until its light turns from red to blue, and scan the QR code on its base.
Common Problems & Fixes
Running into issues? Our eufy Video Doorbell S4 troubleshooting guide covers step-by-step fixes taken from eufy’s own support pages, including offline, won’t connect and live view not working.
Who Should Buy It
Anyone with existing doorbell wiring and a 16-24V AC transformer who wants a 3K doorbell with a 180° x 180° view, colour night vision and local storage with no monthly fee.
Verdict
The eufy Video Doorbell S4 gives you 3K video and a 180° x 180° view from one camera, with colour night vision, radar detection, 4GB of local storage and a Chime 2 included. It is wired only, so it suits homes with existing doorbell wiring; the eufy Video Doorbell S330 runs on battery or wires if you need that.
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Need a hand with this?
If the transformer or mains wiring needs checking or changing, or you are unsure about the doorbell wiring, have a qualified electrician look at it. You can compare up to 3 quotes from local electricians.
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