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ADT Safewatch CellGuard

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With Safewatch CellGuard, your ADT 24/7 home monitoring service doesn’t have to rely on a phone line. Here’s how CellGuard works. Traditionally, home security systems have depended on a hardwired telephone landline in order to connect with the remote monitoring service that makes them so valuable. But landlines have limitations, and in the wake of widespread cell phone use, they’re quickly becoming things of the past. ADT Safewatch CellGuard service is one of the answers to those constraints. 

CellGuard is an optional upgrade to ADT packages. It allows your home security system to communicate with the company’s monitoring centers over cellular networks instead of a landline. If you don’t have a landline, or your landline is down, you can still rely on CellGuard. It ensures that your monitoring protection will not be interrupted. 

Benefits of Safewatch Cellguard

Benefits of Safewatch Cellguard

  • Weatherproof

    If falling trees or harsh winds take down the phone lines, CellGuard’s wireless connection remains operational.

  • Tamperproof

    Practiced criminals know that cutting a landline effectively bypasses many home security systems, but there’s no way to cut a wireless connection. Construction and renovation projects can also take down phone lines, but not cellular networks.

  • Works in a Power Outage

    ADT’s wireless cellular connection functions even when the power is out, for maximum peace of mind in the event of a break-in, accident or other emergency.

  • No Landline Needed

    If you do have a landline, CellGuard is an excellent backup security measure. If you don’t have a phone line﹘or you’re wondering if you can get rid of yours﹘CellGuard can make the wireless cellular network the primary means of communication between your home security system and ADT’s 24/7 monitoring centers.

What to Know About ADT and CellGuard

What to Know About ADT and CellGuard

No cellular contract required

Opting into the CellGuard service affects the pricing and level of protection of your ADT contract. It does not require any activation fees, additional lines, or further monthly billing from your cellular telecommunications provider.


Installation of a cellular transmitter may be necessary

If you have an older ADT security system with landline-based monitoring, then an ADT technician will likely need to install a small cellular transmitter to enable CellGuard on your current system.


Service is contingent upon the networks in your area

If cellular coverage is weak in your vicinity, the CellGuard service may experience connectivity issues. Since ADT does not operate the cellular network itself, it can not guarantee the stability of your connection. If your location has no cellular coverage, CellGuard is not likely to be a good option for you.


ADT will work with you

Your individual home security needs depend on your location, priorities, desired home automation features, and so much more. If you’re not sure whether CellGuard makes sense for you, an ADT representative will be happy to evaluate your options.

What’s the verdict﹘is CellGuard worth it? Relying 100% on a cellular network for monitoring services isn’t the right choice for all customers in all locations. However, an ADT home security system with landline-connected 24/7 monitoring and a CellGuard backup is one of the most secure and dependable options available, because it provides multilayered protection. 

Many homeowners are drawn to ADT because of the company’s long-running reputation, scalable hardware options, home automation options and professional installation. These households might be wondering if they need a wired phone line in order to be protected by ADT. In this case, the CellGuard service bypasses the need for a landline. It offers the best of ADT’s security services with the flexibility of a cellular network. Looking for more information? Learn more about ADT and compare home security systems

Emily Ferron

Written by your home security expert

Emily Ferron

Emily is an experienced writer passionate about covering topics at the intersection of tech, health, safety and humanity.