Picked up a S4 kit with a homebase and it works AWESOME. What a better overall system compared to the ones by Google & Amazon. These have better frame rates, better build, and overall seem to be a system that doesn't strive on a subscription. Quick to setup, quick to sync, happy with the hardware & software (even with a few of the ads).
Two drawbacks after owning the s4 kit for a few weeks.
1) this is not a unique problem for EUFY. The distance to the wireless cameras causes hiccups. The solar panel charges a few percent a day if it gets good sun, otherwise, it may lose anywhere from 5-25% in a single day because of temperature, sensitivity settings and notifications / detection settings. Something could be improved upon. There is a chance to increase battery life by lowering sensitivity and putting the system in disarm mode.
2) Settings don't always "take". I'll remove the alarm to the cameras in the settings, go outside, and that sucker will blare at me. Same goes for putting the system in disarm or away mode... it doesn't always work.
HIGHLIGHTS:
1) The battery is removable! I can charge one inside if I'm hitting single digits outside, and simply change out the battery. WICKED GREAT FEATURE.
2) Duel cameras, one tracking, one static - this feature allows for a constant field of vision and if there are more than one person in a frame, the tracker will zoom out to capture all of them. Best part is that if you set up overlapping fields of fire, multiple cameras can catch moving objects.
3) The video quality - unreal. SO MUCH better than I thought.
4) Easy to use interface (even though there are ads to sell you more stuff). Settings are easy to get to, not always intuitive, but that's easily fixed with an update. Better than most.
5) Truly wireless.
6) Price. It's NOT that expensive. I suggest starting with a two camera system and a homebase + 1tb local storage, and then upgrading with more cameras once you get the hang of it.
7) paring cameras STUPID EASY.
This review is not paid for, and I did not get the system at a discount. Totally worth it.