Home Security & Cameras
Home security cameras and doorbells
We may earn a commission if you buy through links on this page.
A camera system gets wired into the house, so buy one with spare channels and enough storage now. Adding a driveway or back-door camera later shouldn't mean a new recorder.
Featured models
Best whole-home camera system with no monthly fee
Reolink RLK8-810B4-A 4K PoE kit
8-channel NVR + 4 PoE cameras · 4 × 8MP (4K) cameras; person and vehicle detection · PoE: one Ethernet cable per camera to the NVR
Typical price: About $540–$576 at Walmart
See price at WalmartBest doorbell for a PoE camera system
Reolink Video Doorbell PoE (D340P)
PoE video doorbell · 5MP, 2560 × 1920 at 20 fps, 180° diagonal · IEEE 802.3af PoE, or 12–24 VAC / 24 VDC
Typical price: About $82–$100 at Walmart
See price at WalmartBest wired doorbell for Google Home
Google Nest Doorbell (wired, 3rd gen)
Wi-Fi video doorbell, wired · 2K (2048 × 2048), 166° diagonal, HDR, 24/7 live view · Existing doorbell wiring: 16–24 VAC, 10–40 VA transformer
Typical price: About $140–$200 (Walmart $140–$175; Google $199.99)
See Nest Doorbell at GoogleBest wired doorbell for Alexa and Ring alarm homes
Ring Wired Doorbell 4K Pro
Wi-Fi video doorbell, wired (2025) · 4K with wide-angle view and 10x enhanced zoom · 16–24 VAC, 10–40 VA transformer (30–40 VA best), Ring 24 VDC adapter or PoE+
Typical price: About $250 (Ring $249.99)
See Wired Doorbell 4K Pro at RingSpecs from each maker's product page; prices are typical ranges seen in October 2026 and change often.
Buy right once: Count every door and approach you may want covered, then buy a recorder with room to spare. Check your doorbell wiring before choosing a doorbell.
Before you buy, check:
- Number of cameras now and later
- Days of recording you want to keep
- Doorbell wiring (16–24 VAC) or an Ethernet run
Product types
PoE camera systems (NVR)
Wired cameras record locally to a recorder with no monthly fee.
Example: Reolink RLK8-810B4-A, about $540–$576
Video doorbells
Wired to doorbell power or PoE; cloud or local recording.
Example: Google Nest Doorbell (wired, 3rd gen), about $140–$200
Buying guides
Buying guide
Security camera and video doorbell buying guide: PoE vs Wi-Fi, storage and subscriptions
Camera counts, NVR storage, PoE power, doorbell wiring and monthly plans.
Sizing tools
Camera count and NVR storage calculator
How many days of 24/7 video your recorder holds, using Reolink's formula.
How it works: Days = TB × 8 × 1024³ ÷ ((main + sub kbps) × cameras × 3,600) ÷ 24. 6,144 kbps is the default main stream on Reolink's 8MP cameras. Motion-only recording lasts longer.
Estimate only; confirm with your installer or the manufacturer.
Sources for this tool
PoE power budget
Add up what your PoE cameras and doorbell draw and check it against the switch or NVR budget.
How it works: Total = cameras × watts + other devices × watts. Per port, IEEE 802.3af delivers up to 12.95 W at the device, 802.3at (PoE+) 25.5 W and 802.3bt up to 71 W.
Estimate only; confirm with your installer or the manufacturer.
Video doorbell chooser (wiring and ecosystem)
Start from the wiring at your door, then your smart-home app.
How it works: Wired Ring and Nest doorbells need a 16–24 VAC transformer rated 10–40 VA; Reolink's PoE doorbell runs on 802.3af PoE and records locally.
Estimate only; confirm with your installer or the manufacturer.