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Smart locks and security cameras make it easier to manage home access and see what is happening around your property. But they do not necessarily provide the same protection as an alarm system. A camera can record someone approaching a door, and a smart lock can control who enters, but neither automatically detects every intrusion or ensures someone responds to an emergency.For homeowners deciding whether their existing devices are enough, the key question is how the equipment works together. An alarm system with smart locks and cameras can combine entry-point detection, video monitoring and remote access in a more coordinated setup.Ready to protect every entry point and eliminate home security blind spots? Request a free quote from ADT today to find the right combination of alarm sensors and smart devices for your setup.
Do you still need an alarm system if you have smart locks and cameras?
Yes, an alarm system can provide protection that smart locks and cameras alone do not. Smart locks manage access, while cameras provide video and alerts. An alarm system adds sensors that detect events such as a door or window opening, along with an audible alarm and, depending on the service, professional monitoring.
The right setup depends on your home’s entry points, the devices you already own and whether you want someone to respond when an alert comes in. Smart locks and cameras are useful components of home security, but they are not direct substitutes for intrusion detection.
What does an alarm system do that smart locks and cameras don’t?
Each device serves a different purpose. Understanding those differences helps identify gaps in an existing setup.
Smart locks
Alarm system
Yes
Not by itself
No
Only if paired with cameras
Not typically its primary function
Yes, when equipped with appropriate sensors
Not typically
Yes, if equipped and configured
Access and lock-status alerts, depending on model
Sensor and alarm alerts, depending on system
Only through a compatible integrated service, if offered
Available with eligible monitoring services
Smart Locks Help Manage Access
Smart locks let homeowners lock or unlock doors remotely, issue individual entry codes and review access activity on compatible models. These features are useful for managing household members and visitors without distributing physical keys.
But a lock cannot necessarily detect someone entering through an unlocked window, forcing a door or accessing a garage. Remote locking also does not establish whether every other entry point is secure.Related: Just Moved Into a New Home? 10 Security Steps To Take Before You Unpack
Cameras Provide Visibility, Not Complete Intrusion Detection
Cameras can capture activity at doors, driveways and other areas of interest. Depending on the model and configuration, they may send motion alerts, record footage or support live viewing.
Their limitations depend on placement, lighting, connectivity, power and recording settings. A camera may not cover every entry point, and a notification does not guarantee that anyone sees it immediately or takes action.
Alarm Sensors Detect Activity at Protected Entry Points
An alarm system can use door and window contacts, motion detectors and other compatible sensors to detect specific events. When the system is armed, a triggered sensor can activate an alarm and send notifications according to the system’s configuration.
That detection layer is especially useful when a camera’s view is obstructed or an intruder enters through an area outside its coverage.
When is an alarm system worth adding to smart locks and cameras?
An alarm system is worth considering when your current devices leave gaps in detection or response. The case is stronger for homes with several accessible entry points, detached garages, ground-floor windows or owners who cannot reliably monitor phone alerts throughout the day.
Consider adding alarm protection if:
You have blind spots. Cameras do not cover every door, window or interior approach. You want detection beyond video motion alerts. Door and window sensors can trigger when a protected entry point opens. You are often away. You may not be available to review an alert or contact emergency services yourself. You want professional monitoring. An eligible monitored system can route alarm signals to a monitoring center, subject to the service’s procedures and terms. You want one coordinated setup. Compatible locks, cameras and sensors can be managed through an integrated system rather than several unrelated apps.Before buying more equipment, check which functions your current devices already provide. Some cameras include person detection or built-in sirens, and some smart-home systems support compatible sensors. The goal is to fill actual security gaps rather than duplicate features.Not sure whether your current setup covers the home’s entry points? Get a free ADT quote to discuss your home’s layout and security needs.
What should you look for in an alarm system with smart locks and cameras?
Choose a system based on the protection you need, not simply the number of connected devices. Start by confirming that the equipment works together and that the features you expect are included in the service.
Check Compatibility and Coverage
Before adding equipment, confirm that your locks and cameras are compatible with the system and app you plan to use. Then map the entry points that need protection, including exterior doors, accessible windows and the door connecting the garage to the house.
Consider these questions:
Can the system monitor the doors and windows you want to protect? Will you receive alerts when the system is armed or disarmed? Do the cameras record continuously or only when triggered? What happens if the internet connection or power fails? Is professional monitoring included, optional or unavailable with the configuration?The answers depend on the equipment and service plan. Check product specifications and service terms before assuming a feature is included.
Decide Whether You Need Professional Monitoring
Self-monitored systems send alerts to the homeowner, who decides what to do next. Professional monitoring adds a monitoring center that can receive eligible alarm signals and follow established response procedures.
Neither option eliminates every risk. A monitored system depends on proper installation, working equipment, communications and the terms of the service. Still, professional monitoring offers an alternative to relying entirely on someone noticing a phone notification.
ADT offers professionally monitored home security systems and compatible smart-home devices. A consultation can help determine which sensors, cameras and access-control features fit your home.Related: Battery vs. Solar vs. Hardwired Security Cameras: Which Setup Is Best for Your Home?
Can smart locks and cameras work without an alarm system?
Yes. Smart locks and cameras can provide useful access control, video and notifications without a separate alarm system. That arrangement may suit homeowners who want basic visibility and remote locking and who understand that they will be responsible for responding to alerts.
The trade-off is that the setup may not include dedicated intrusion sensors, an integrated audible alarm or professional monitoring. Review the functions of each device rather than assuming that a camera or smart lock provides every feature of a full security system.
Should you upgrade your home security setup?
If your smart locks and cameras cover your needs, you may not need to supplement them. First, identify what they detect, where they provide coverage and who responds when an alert arrives. Add an alarm system if you want dedicated intrusion sensors, a coordinated alarm response or professional monitoring.
ADT can help you review those options and determine which combination fits your property.Ready to review your home’s security? Schedule a free quote with ADT to discuss alarm protection, compatible smart devices and coverage for your home’s entry points.
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