PoE vs WiFi Security Cameras: Which to Run
Choose PoE if you can run cable: one Ethernet line carries both power and video, there is no WiFi signal to drop, and one battery backup at the switch or recorder can keep every camera running for as long as the battery lasts. Choose WiFi if running cable is impractical. By Reolink's October 2026 prices, its 4K RLC-810A PoE camera is $99.99 and the WiFi version is $129.99.
Figures researched 2026-10-01; each source below carries its access date. Prices change; treat any price here as "as of" its date.
What is the actual difference between PoE and WiFi cameras?
A PoE (Power over Ethernet) camera gets power and its network connection from one Ethernet cable plugged into a PoE switch, injector or network video recorder (NVR). A WiFi camera sends video over your wireless network but still needs power from somewhere: a plug-in adapter, hardwiring, or a battery. "Wireless" usually means wireless data, not wireless power.
Reolink sells the same 4K camera body both ways, which makes for a clean on-paper comparison:
| Spec (Reolink, October 2026) | RLC-810A (PoE) | RLC-810WA (WiFi) |
|---|---|---|
| Listed price | $99.99 | $129.99 |
| Resolution | 4K 8MP (3840 x 2160) | 4K 8MP (3840 x 2160) |
| Network | Ethernet | Dual-band 2.4/5 GHz WiFi 6 |
| Power | PoE (IEEE 802.3af) or 12V DC | 12V DC adapter |
| Power draw | Under 12W | Under 12W |
| Local storage | microSD up to 512GB | microSD up to 512GB |
In this pair the WiFi model costs $30 more, and it still needs a power outlet or a wired 12V run at the mounting spot. The PoE model needs an Ethernet cable back to a PoE port instead, and nothing else.
The same split applies to whole alarm systems, not just cameras; that version of the question is in wired vs wireless security systems.
How far can PoE run, and how much power does it carry?
The standard Ethernet channel limit is 100 meters (328 feet) from the PoE port to the camera, per Reolink's PoE guide, which recommends extenders, intermediate switches or fiber for longer runs. That covers almost any house and most detached garages.
Power is set by the IEEE standard the port supports:
| Standard | Max power at the port | Min power at the device | Typical use |
|---|---|---|---|
| IEEE 802.3af (PoE) | 15.4W | 12.95W | Fixed cameras like the RLC-810A |
| IEEE 802.3at (PoE+) | 30W | 25.5W | Pan-tilt-zoom cameras, cameras with heaters or spotlights |
| IEEE 802.3bt Type 3 | 60W | 51W | High-draw devices |
A camera rated under 12W fits inside an 802.3af port's 12.95W device budget. Check the camera's spec sheet against the switch or NVR before buying: a PTZ or floodlight camera may need PoE+ ports, and a switch's total power budget can run out before its ports do.
One practical advantage follows from the cabling. Because every PoE camera draws power from the switch or recorder, a single battery backup (UPS) at that box can keep all of them recording through a short power cut. A WiFi camera on a wall adapter goes dark when the outlet does, and it also needs the router to stay up.
When does each one make sense?
| Situation | Better fit | Why |
|---|---|---|
| New build, renovation, or open attic and walls | PoE | Cable is cheap to pull before drywall; see prewiring a new house for security |
| Four or more outdoor cameras with an NVR | PoE | One recorder, one power source, no WiFi congestion |
| Weak WiFi at the far side of the house | PoE | Signal strength stops mattering |
| Renter, or finished walls you cannot open | WiFi | Plugs into an outlet; nothing to drill through |
| One or two cameras near the router | WiFi | Fastest setup |
| No power or network at the mount point | Battery or cellular | Neither PoE nor plug-in WiFi works there; see security cameras without WiFi |
The real cost of PoE is installation, not hardware. Running Ethernet through finished walls and outdoors takes time or an installer, and we could not find a published per-camera install price from a major brand to quote. If the cable runs are easy, PoE removes the WiFi link and the separate power outlet as points of failure; if they are not, a WiFi camera on a strong signal is a reasonable compromise.
PoE kits are mostly sold as NVR bundles. Two of the larger NVR brands are compared on published specs in Lorex vs Reolink, and cameras that record locally with no plan, PoE and WiFi alike, are in no-subscription security cameras.
Frequently asked questions
- Are PoE cameras more reliable than WiFi cameras?
- On paper, a PoE camera has fewer points of failure. A wired Ethernet link does not compete with other devices for wireless bandwidth or fade with distance from the router, and power comes from the same cable. A WiFi camera with a strong signal can work well, but it depends on both the router and a power outlet staying up.
- Do WiFi security cameras need to be plugged in?
- Most do. Reolink's RLC-810WA, for example, runs on a 12V DC adapter. Only battery and solar models avoid a power cable, and Reolink notes that its battery-powered cameras do not support continuous recording.
- How long can a PoE camera cable be?
- Up to 100 meters (328 feet) from the PoE port, per the standard Ethernet channel limit Reolink cites. Longer runs need a PoE extender, a switch partway, or fiber.
- Do PoE cameras work during a power outage?
- Only if the PoE switch or NVR has power. Putting that one box on a battery backup keeps every camera on it powered for as long as the battery lasts, which is simpler than backing up each WiFi camera's outlet and the router.
Sources
- Reolink RLC-810A: US $99.99; 4K 8MP 3840x2160; PoE IEEE 802.3af 48V active or DC 12V 1A; power consumption under 12W; microSD up to 512GB: https://reolink.com/us/product/rlc-810a/ (accessed 2026-10-01)
- Reolink RLC-810WA: US $129.99; 4K 8MP 3840x2160; 2.4/5 GHz dual-band WiFi 6 (802.11a/ac/ax/b/g/n); DC 12V 1A; under 12W; microSD up to 512GB; no subscription needed: https://reolink.com/us/product/rlc-810wa/ (accessed 2026-10-01)
- PoE distance limit 100 m (328 ft); 802.3af 15.4W at port, 12.95W at device; 802.3at 30W and 25.5W; 802.3bt Type 3 60W and 51W; use extenders, intermediate switches or fiber for longer runs: https://reolink.com/blog/poe-distance-limit/ (accessed 2026-10-01)
- Reolink: battery-powered cameras do not support continuous recording: https://support.reolink.com/articles/360007011633-How-Long-Can-the-Micro-SD-Card-in-Reolink-Cameras-Record/ (accessed 2026-10-01)
Related guides
- Security Cameras That Work Without WiFi, on Paper Three ways cameras work without WiFi: LTE cameras (Eufy S330, Reolink Go, Arlo Go 2), SD-card standalone recording, and wired NVR systems. Data plan needs included.
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