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DIY home security gives homeowners more control over equipment, installation and cost. But setting up a system correctly involves more than sticking sensors to doors and mounting a few cameras. Poor placement can create gaps in coverage. Weak Wi-Fi may affect camera performance, while overlooked security settings can create unnecessary cybersecurity risks.
ADT now offers both self-setup and professionally installed systems, so homeowners can choose how much of the installation they want to handle themselves. But before installing a DIY security system, you’ll need to watch for these seven common mistakes that reduce coverage or reliability.
If you’re unsure where sensors, cameras or other devices should go, ADT offers a free in-home consultation where a Solutions Advisor can recommend equipment based on your home’s layout and security needs.
What Are the Most Common DIY Home Security Mistakes?
The most common DIY security mistakes involve sensor placement, network connectivity, account security and incomplete coverage. Unfortunately, a system may appear to be working normally even though a sensor is misaligned or a camera isn’t receiving a reliable connection. Let’s take a closer look at each.
|
DIY Security Mistake |
Why It Matters |
|---|---|
|
Poor motion sensor placement |
Can reduce useful coverage or contribute to unnecessary alerts |
|
Misaligned door/window sensors |
May prevent reliable open-and-close detection |
|
Weak Wi-Fi around cameras |
Can interrupt video and connected features |
|
Leaving default router credentials |
Makes the home network less secure |
|
Skipping updates or MFA |
Leaves connected accounts and devices more vulnerable |
|
Missing secondary entry points |
Creates gaps in security coverage |
|
Failing to test the system |
Installation problems can go unnoticed |
1. Installing Motion Sensors in the Wrong Place
Motion sensors depend on placement. Mounting one where furniture blocks part of its field of view reduces the area it monitors. Locations with frequent movement from pets may also require more careful setup, depending on the sensor.
Before permanently mounting a sensor, review the manufacturer’s placement instructions and test the area it will cover. That extra few minutes during installation is easier than discovering later that an important area wasn’t being monitored as expected.
2. Misaligning Door and Window Sensors
Door and window contacts typically consist of two pieces that must line up when the opening is closed. ADT’s current door and window sensor instructions specify that the sensor and magnet should be no more than ½ inch apart. The alignment marks should also face one another and sit at approximately the same height.
A large gap or poor alignment can interfere with reliable detection.
After mounting each sensor, open and close the door or window several times and confirm that the system correctly reports its status.
3. Mounting Security Cameras Where Wi-Fi Is Weak
A camera’s view isn’t the only thing worth checking before you drill holes into siding or attach a mount. You’ll also need to check the Wi-Fi connection from that location.
Most connected security cameras depend on the home network for features such as live video, recordings and remote access. Exterior walls, distance from the router and other obstacles can weaken the signal.
Moving a camera, even a relatively short distance, may improve connectivity while preserving the view you need.
If you’re concerned about getting sensor and camera placement right, ADT also offers professional installation. A technician can handle equipment setup and testing rather than leaving the entire installation to the homeowner.
4. Leaving Default Router Passwords in Place
A DIY security system isn’t just physical hardware. Cameras and other connected devices also depend on the security of your home network.
The Federal Trade Commission recommends changing default administrative usernames and passwords on home routers and connected devices. They also suggest using unique passwords rather than reusing credentials from other websites or accounts.
For the home router itself, the agency recommends WPA3 or WPA2 encryption and changing both the Wi-Fi password and router administrator password from their defaults.
5. Skipping Two-Factor Authentication and Software Updates
Connected security devices need routine digital maintenance.
The FTC recommends enabling two-factor authentication for security-camera accounts when the feature is available. Two-factor authentication requires another form of verification in addition to the password.
CISA also recommends multi-factor authentication and prompt software updates as basic cybersecurity practices. Updates matter because manufacturers use them to fix security flaws and other problems discovered after a product is released.
Enable automatic updates when supported and keep the mobile app used to manage the security system current as well.
6. Protecting the Front Door but Ignoring Other Entry Points
A starter package may not provide enough sensors for every house.
ADT recommends its door/window sensors for vulnerable entry points such as exterior doors and basement windows. Before ordering equipment, walk around the home and identify accessible openings.
A side door that receives little attention or a door connecting an attached garage to the living space may deserve the same consideration as the front entrance. The same applies to accessible windows that aren’t visible from the street.
7. Installing the System Without Testing Everything
Finishing the installation isn’t the final step.
Test every sensor from its permanent location. Open protected doors and windows, walk through motion-sensor coverage areas and check camera video after mounting the devices. Then, review notifications in the system’s app to confirm that each device is reporting correctly.
Testing also gives you a chance to find weak batteries, poor Wi-Fi connections or equipment that needs repositioning before you rely on the system. ADT’s support guidance includes testing procedures for its self-setup sensors and advises using the appropriate test mode when servicing equipment to avoid unnecessary alarms.
Key Takeaways
A DIY security system works best when every part of it has been installed and verified rather than simply connected. Taking the extra time to verify sensor alignment, secure your Wi-Fi network and test every device guarantees your coverage is dependable from day one.
If you’d rather have professional help designing or installing your home security system, ADT offers free in-home consultations along with professionally installed security options.