A home security system is one of the best ways to deter burglars and keep your home safe. But do you need a landline to make it work? The short answer is no—you can now get a cellular-based security system that doesn’t require a phone line. Here’s everything you need to know about how these systems work and why you might want to consider one for your home.
In the past, most security systems were hardwired into your home’s landline. If a burglar cut the phone line, the security system would be rendered useless. But with new technology, you can now get a wireless security system that uses cellular connectivity. This means that even if a burglar cuts your phone line, your security system will still work—and you’ll be able to call for help.
Cellular-based security systems have many other benefits as well. They’re often easier to install than traditional hardwired systems, and they’re more reliable since there are no wires that can be cut or damaged. They’re also great for people who travel frequently, since you can take them with you and use them in any home with cellular service.
Frequently Asked Question
Do I need a phone line for a security system?
Does a home security system need internet?
Does SimpliSafe require landline?
Does ADT Pulse require landline?
Do I need a landline for alarm monitoring?
Does SimpliSafe work if internet is down?
Does ADT run on Wi-Fi?
What cell service does ADT use?
You can buy a security system without a landline, or a landline security system. Typically, a security system without a landline uses cellular technology to communicate with the security company’s monitoring center. A landline security system uses your home telephone line to reach the monitoring center. 
Many security system companies recommend an internet connection or at least a landline in order to set up a security system for your home or business. However, this is only necessary so that they can receive data from the security system and provide you with services such as alarm monitoring.25 Feb 2019 
SimpliSafe’s home security systems offer easy, DIY setup. The equipment functions with a cellular connection, so you won’t need a landline to tap into their award-winning service. No monthly fees, and no long-term contracts Â just solid home protection. 
ADT Basic package $36.99/ month does require a landline phone. ADT CellGuard package $48.99/ month and ADT Pulse package with CellGuard $52.99/ month do not require a landline phone to work. To compare ADT monitoring packages, visit our Packages and Pricing page.11 Apr 2019 
Home security systems do not need a phone line. Modern security systems can use cellular signals, internet connection, or VoIP to send alerts to their respective monitoring centers.1 Mar 2022 
Fortunately, SimpliSafe can still function without a Wi-Fi connection or power. The security system has a wireless communication channel that allows users to continue accessing its basic features. Also, SimpliSafe has backup rechargeable batteries that can last up to 24 hours during an outage.16 Sept 2020 
All ADT security cameras enjoy wide compatibility with Android 4.4 or higher and Apple iOS 10. X or higher and connect easily to your home internet router via an 802.11 b/g/n Wi-Fi connection set at 2.4GHz. 
Cellular monitoring with ADT is primarily done using the AT&T cellular network using CDMA technology.12 Nov 2021 
In short, the answer is no. You do not need a phone line for a security system. There are many other options available that are more affordable and just as effective.