Start with the wires behind your old doorbell
Unscrew the old button before you shortlist anything. If two low-voltage wires sit behind it, every doorbell in this comparison is an option. If nothing is there, the Google Nest Doorbell (Wired, 2nd Gen) drops out, since it has no battery and needs a 16-24VAC transformer, and the Ring Wired Doorbell 4K Pro, which also has no battery, runs only from Ring’s plug-in adapter. The other six run on a battery and treat wiring as optional.
Wires alone do not settle it, because the transformer behind them has to match the unit. The two hardwired-only models are the strictest. Ring specifies 16 or 24VAC at 10-40VA for the 4K Pro and recommends 30-40VA, or 24VDC at 12W. Google specifies 16-24VAC at 10-40VA for the wired Nest. The battery-capable models accept a wider range. Ring’s Battery Doorbell Plus trickle-charges from 8-24VAC up to 40VA, the battery Nest from 8-24VAC at 10VA, and the Arlo from 8-24VAC. Eufy’s hardwired mode for the E340 takes 8-24V above 10VA, and Wyze lists wired power at 12-24V AC or 5V/2A DC. Reolink splits its own spec in two: battery mode trickle-charges from 8-24VAC or 24VDC, while Wired Power Mode needs 16-24VAC.
That gap between 8V and 16V is the practical fork. A transformer rated below 16V can keep most of the battery models topped up (the Wyze needs at least 12V AC) but cannot run either hardwired-only model or put the Reolink into Wired Power Mode.
Hardwiring a battery doorbell changes less than it sounds
Arlo states the distinction outright: the Video Doorbell 2K is always battery-powered, house wiring provides trickle charging and chime triggering, and the unit never runs purely off the wiring.
Ring draws the same line in its support documentation. Continuous Live View and 24/7 recording are available on two doorbells, the Wired Doorbell 4K Elite and the Wired Doorbell 4K Pro, because the feature requires constant wired power. The Battery Doorbell Plus is not on that list, and connecting it to a transformer does not add it.
Reolink is the exception. The Video Doorbell (2nd Gen) records motion clips in battery mode, but switching on Wired Power Mode in the app, with the unit connected to a 16-24VAC source, unlocks 24/7 recording and pre-recording. It is the one battery-capable doorbell in this group where the wires change what gets recorded rather than only how the battery is charged.
For the Eufy E340, the Wyze, and both Nest models, no manufacturer documentation retrieved for this guide describes a continuous recording mode in any power configuration. The wired Nest deserves a second look here. It requires a 16-24VAC transformer and has no battery, yet Google documents the same motion-triggered event clips and the same Nest Aware structure as the battery version.
Will it ring the chime already on your wall
Someone replacing a mechanical doorbell usually wants the existing chime box to keep working. The eight models handle that in four ways.
The first group rings it with no extra step. For Ring’s Wired Doorbell 4K Pro, Ring says its Chime Kit Mini replaces the existing chime functionality and installs above the chime box. The Eufy E340 and the Reolink both state compatibility with existing mechanical chimes, and Reolink also lists its own Chime Plus and Home Hub. The wired Nest goes past compatible to dependent: its Amazon listing says it requires a compatible wired doorbell chime to function properly.
The second group rings it, but not by default. Google’s guidance for the battery Nest says the existing wired chime will not ring until a setting is turned on in the app, and it supports mechanical and digital chimes rated 8-24VAC.
The third is the Arlo, which rings a traditional chime only if that chime runs on 8-24VAC. Arlo’s community support states that chimes running on direct current are not compatible and points to the Arlo Chime 2 accessory instead.
The fourth is the Wyze. The Battery Video Doorbell works with the Wyze Universal Wi-Fi Chime, and reaches an existing mechanical chime only through a separate Wyze Chime Controller accessory.
What you can watch afterward, and whether you pay for it
Ring, Google and Arlo all include live view and alerts without a subscription. What differs is what remains to watch after someone has left, and that split follows the brand, not the power source.
Ring records nothing without a Ring Protect subscription. Its support page states that events are only recorded after you subscribe, and that applies to the Wired Doorbell 4K Pro exactly as it does to the Battery Doorbell Plus, which also has no local storage option.
Google’s free tier keeps short event clips for up to 3 hours on both the battery and wired Nest. Longer 30-day or 60-day event history requires Nest Aware. Arlo’s cloud clips need Arlo Secure.
The other three record locally with no subscription. The Eufy E340 writes events to 8GB of on-device storage, which Eufy says holds roughly 90 days of event video, with free cloud backup history included. The Wyze records to a microSD card up to 256GB and offers Cam Plus for cloud storage as an option. The Reolink records to a microSD card up to 512GB, with Reolink Cloud as a separate paid service. None of the pages retrieved state whether a card is included, so plan to supply one.
How often the battery comes off the wall
Reolink’s basis of 5 minutes of recording per day is the lightest assumption stated, so its 300-day figure is not on the same scale as the 6-month figures Eufy and Wyze publish, and none of these figures describe a busy entryway.
Whether the battery comes out matters as much as how long it lasts. Ring’s Quick Release Battery Pack and Eufy’s quick-release pack are removable. The battery Nest, the Wyze and the Arlo have built-in batteries. The Reolink page retrieved here does not state whether its battery is removable.
When a battery model is genuinely enough
A battery model with wiring attached is enough if you want motion clips you can review, a chime that rings, and no monthly plan. Both the Eufy E340 and the Reolink fit that description on their published specs: mechanical chime compatibility, local storage without a subscription, and a published hardwired mode on existing wiring.
It is not enough if you want an unbroken record of the porch. The two routes to that, covered above, both need a transformer of at least 16V, so a lower-rated one rules both out until it is replaced.
Details that only show up on the spec sheet
Aspect ratio decides whether the frame reaches the doormat. Ring’s 4K Pro, Ring’s Battery Doorbell Plus, the Arlo, the Wyze and the Reolink all publish square frames, which Ring markets on the 4K Pro as head-to-toe coverage. The two Nest models publish 960 x 1280 at 3:4, a portrait frame. The Eufy E340 takes a different approach, pairing a 2048 x 1536 main camera with a second 1600 x 1200 camera pointed down at the doorstep. For how field of view and resolution translate into porch coverage, see the PickPrism guide on doorbell field of view.
Weather ratings vary more than the similar shapes suggest. The Eufy, Wyze and Reolink publish IP65; the Ring Battery Doorbell Plus IP55; both Nests IP54. Neither the Arlo spec sheet nor the Ring 4K Pro page retrieved states an IP rating. Operating ranges differ at both ends: the Nests publish -4°F to 104°F, the Ring Battery Doorbell Plus and the Wyze -4°F to 122°F, the Arlo -4°F to 113°F, and the Reolink 14°F to 131°F.
