A wired contact, Ethernet camera, Wi-Fi camera and cellular alarm communicator are four different kinds of connections. A seller may call each of them a “wired” or “wireless” security system. The first purchase decision is therefore which component can safely fit the building—not which badge sounds more dependable.
This page owns the installation architecture decision. If your question is which features still work when internet fails, read home security without Wi-Fi. For the response during a real blackout, use the outage security plan.
Map each path to its dependency
| Component | Wired approach | Wireless approach | Check before buying |
|---|---|---|---|
| Entry sensor | Cable to compatible alarm panel | Manufacturer-supported radio and sensor battery | Panel/model compatibility |
| Camera | Ethernet or coaxial path to storage | Wi-Fi or other radio path, with separate power | Where footage records without ISP |
| Alert | Control panel, siren and communicator | Radio sensor feeding a control hub | Does any off-site signal actually transmit? |
| Installation | Wiring access and qualified work may be needed | Mounting may require fewer alterations | Lease, building and permit limits |
| Maintenance | Connections and panel backup checks | Sensor batteries plus radio coverage checks | Exact periodic replacement instructions |
Neither approach automatically supplies a professional monitoring subscription or protection during a long grid outage. The FTC security-system shopping guide says to ask for written installation, battery, monitoring, cancellation and warranty information.
Choose a full configuration, not one component
Home with permitted existing alarm wiring. Ask an installer whether the current panel, sensors, siren and battery are still supported. Reusing wired components can avoid replacement work, but old equipment may be unsupported or lack the notification path needed.
Rental without permission to open walls. A removable sensor system may reduce construction. Confirm allowed mounting methods, entry hardware, return terms and whether the building already has separately required alarms.
Household needing camera history during an internet outage. Verify exact storage destination, network switch, camera power and access method. Even an Ethernet camera stops recording if its recorder lacks power. Protect video and accounts with the FTC camera security guidance.
Check what “backup” actually covers
A powered panel, radio sensor, cellular communicator, camera and network recorder may have separate batteries—or none. Ask the seller to identify each one, its manufacturer-stated operation and the procedure for an approved test. Do not trigger emergency dispatch while experimenting.
Never run low-voltage security cabling alongside household wiring or penetrate fire-rated barriers without appropriate qualified work. Smoke and carbon-monoxide alarms have their own requirements and should never be traded away for a burglary package.
Wired-wireless choice card
| Evidence | Configuration A | Configuration B |
|---|---|---|
| Exact sensor and panel models | ||
| Camera storage and encryption | ||
| Required cabling, installer and permission | ||
| Whole-path power failure and fallback | ||
| Monitoring signal and subscription terms | ||
| Support, updates, warranty, cancellation |
The next action is to ask two providers to complete the same card, rather than comparing only the advertised starting prices.