Everything You Need to Know About Home Alarm Systems in 2025

A home alarm system is a network of devices designed to detect unauthorized entry into a residence. It typically includes sensors on doors and windows, motion detectors, and a control panel that communicates with these devices. When a breach is detected, the system triggers alarms to alert occupants and may notify authorities, depending on the system's configuration.

How Does a Home Alarm System Work?

Home alarm systems operate by monitoring entry points and interior spaces using sensors. When these sensors detect activity while the system is armed, they send signals to the control panel, which then activates alarms. Monitored systems also alert a central monitoring center, which can dispatch emergency services if necessary.

What Are The Different Types of Home Alarm Systems?

Home alarm systems can be categorized into:

• Monitored Systems: Connected to a professional monitoring service that responds to alerts.
• Unmonitored Systems: Trigger local alarms without external notifications.
• Wired Systems: Use physical cables to connect components.
• Wireless Systems: Utilize radio frequency signals for communication.
• DIY Systems: Designed for self-installation and often more affordable.
• Professionally Installed Systems: Set up by experts, ensuring optimal placement and functionality.

Should I Choose a Monitored or Unmonitored System?

Monitored systems offer continuous surveillance and can automatically contact emergency services, providing enhanced security. However, they come with monthly fees. Unmonitored systems are more budget-friendly but rely on occupants or neighbors to respond to alarms. Your choice depends on your security needs and budget.

Wired vs. Wireless Home Alarm Systems: Which Is Better?

Wired systems are generally more reliable and less susceptible to interference, but require professional installation and are less flexible. Wireless systems are easier to install, often DIY-friendly, and more adaptable to changes in your home layout. However, they may be prone to signal interference and require regular battery maintenance.

DIY vs. Professionally Installed Systems: What's The Difference?

DIY systems are cost-effective and allow for flexible installation, making them ideal for renters or those on a budget. However, they may lack some advanced features and professional support. Professionally installed systems ensure optimal setup and often come with comprehensive support and maintenance services, but at a higher cost.

Is a Home Alarm System Worth The Investment?

Yes. A home alarm system enhances the safety of your residence, deters potential intruders, and can provide peace of mind. Additionally, many insurance companies offer discounts on premiums for homes equipped with security systems, potentially offsetting the initial investment over time.

What Is The Most Suitable Alarm System For Renters or Apartments?

Renters and apartment dwellers should consider wireless, DIY alarm systems that don't require permanent installation. These systems are easy to set up and remove, ensuring compliance with rental agreements. Look for systems that offer mobile app control and customizable features to suit your specific needs.

Key Takeaways

• Monitored Systems: Provide professional oversight and rapid emergency response.
• Unmonitored Systems: Cost-effective but rely on personal vigilance.
• Wired Systems: Stable and reliable, but less flexible.
• Wireless Systems: Flexible and easy to install, but may face interference issues.
• DIY Installations: Budget-friendly and customizable.
• Professional Installations: Comprehensive and reliable, but more expensive.
• Best for Renters: Wireless, DIY systems that are easy to install and remove.

*Google Nest Doorbell (battery) + Google Nest Cam (outdoor or indoor, battery) on us: Requires 36-month monitoring contract with ADT Complete starting at $49.99/mo. for professionally installed systems, (24-month monitoring contract in California, total fees from $1,199.76), and enrollment in ADT EasyPay, OR month-to-month monitoring contract with ADT Complete for DIY systems starting at $39.99 (one month minimum). Professionally installed system orders not available online. Offer includes one (1) Google Nest Doorbell (battery) and one (1) Google Nest Cam (outdoor or indoor, battery) on us with minimum purchase price of $599 for professionally installed systems OR $269 for DIY systems after promotion is applied depending on geographic location. Offer not applicable to other Google Nest products or other generations of Google Nest Products. Offer only available for ADT+ eligible system purchases. Other systems not eligible. Total max discount value of $599.98 for professionally installed systems OR $359.98 for DIY systems. Google Nest Doorbell (battery) and Google Nest Cam (outdoor or indoor, battery) $179.99 MSRP each. Offer available for new ADT customers only. Limit one per customer, not combinable with other offers. Upon early termination of 36-month monitoring contract, ADT may charge 75% of the monthly service charges due for the balance of the initial contract term. Professional monitoring required for ADT to notify emergency contacts or services on your behalf. Service and installation charges vary depending on system configuration, equipment and services selected. Free shipping applies to standard shipping (approx. 5-7 business days) and not available in HI or AK. Cancel by calling (888) 392-2039 or by following the instructions in your order confirmation email. Familiar face detection is not to be used as definitive identification and is not available on Nest cameras used in Illinois. Some features, including mobile notifications, remote control, video streaming and video recording, require working internet and Wi-Fi, a Google Account and Google Home app linked to your ADT+ app. Minimum OS requirements are available at g.co/home/req. Google Nest products and services featured are designed to make life easier and to build a helpful home and were not designed specifically for life-sustaining or safety-critical use cases. These products and services are compatible with the ADT+ System, and depend upon working internet, Wi-Fi, and, in some cases, the service availability from ADT and/or Google. To learn more, please visit http://g.co/nest/TOS. Expires 11/2/2025.

Google and Nest Doorbell are trademarks of Google LLC.
Yale® is a registered trademark of Master Lock Company LLC and its affiliates.