Eufy Cam S4 vs Eufy PoE Bullet-PTZ Cam E50

For most homes the Eufy Cam S4 is the easier buy, because it works on its own with solar charging, local storage on 32 GB plus a microSD card, RTSP output and support for Google Home, Alexa and Home Assistant. The Eufy PoE Bullet-PTZ Cam E50 is the better pick only if you already own a eufy NVR E50 or NVR S4, in which case you also get 24/7 recording and a 3-year warranty.

Whether the camera works by itself. The Eufy Cam S4 is a wireless, solar-powered camera that stores footage locally and needs no other hardware, while the Eufy PoE Bullet-PTZ Cam E50 is an add-on that only functions once it is paired with a eufy NVR over a Power over Ethernet cable, and it keeps nothing on the camera itself.

No. Its recording, on-device AI and searchable footage all run on the camera and the NVR you own, with no monthly fee, and cloud storage is only an optional extra. The Eufy Cam S4 works the same way, recording locally to its built-in memory or a microSD card rather than requiring a plan.

Yes, but it has to be hardwired to constant power, and on battery it records events rather than continuous video. The Eufy PoE Bullet-PTZ Cam E50 records 24/7 to the NVR's drive as standard, because it draws power from its Ethernet run.

Anyone who wants a single wireless camera that tracks and zooms, shoots 4K, stores locally with no fee and works with Google Home, Alexa or Home Assistant, and who has enough sun to keep the battery charged.

Owners of a eufy NVR E50 or NVR S4 who want a second camera on one cable and want continuous 24/7 recording to the recorder's drive, backed by a 3-year warranty.